text:
User talk:Apinkpony~enwikibooks

Welcome message
Hello, and welcome to Wikibooks!

Here are some tips to help you get started:
 * To learn the wiki-markup-language syntax, see Help:Editing.
 * You should sign your name on Talk and vote pages using four tildes, like this: ~~~~
 * There is a box at the top of the edit window that will insert this, too; it looks like part of a signature.
 * Remember to conduct any editing experiments in the sandbox.
 * You can tell the community something about yourself in your userpage.
 * You can get to this page by clicking the tab at the top of the page labeled with your registered username.
 * Wikibooks is a collection of open-source textbooks. (What is Wikibooks).
 * If you are a Wikipedian, see Wikibooks for Wikipedians for a primer on how things work here (it's a little different).
 * If you want to base your work here on materials from Wikipedia, please use WB:RFI (requests for importation) to bring the material over in compliance with the GFDL.
 * If you're an instructor and plan on using Wikibooks for a class project, see Guidelines for class projects
 * Please say hello at the Reading Room with any questions or ideas.
 * Eventually, you might want to read the Manual of Style and Policies and Guidelines.
 * Help us by participating in policy and guideline creation.
 * Please take a look at Naming policy before starting a new book.
 * Remember to maintain a Neutral point of view.
 * Explore, be bold in editing pages, and have fun!

You will find more resources in Community Portal. If you want to ask a question, visit the Study help desk, the Reading Room, IRC channel or ask me personally on my talk page. For site news, see the Bulletin board. It might be a good idea to add that page to your "watchlist" so that you can see when any new information is posted there. You can do that by clicking the tab labeled "watch" at the top of the page.

Good luck! --Panic 18:12, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Apinkpony. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Apinkpony~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 22:56, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 04:33, 19 April 2015 (UTC)

title: User talk:Apinkpony~enwikibooks


text:
User talk:Mikefsj

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:00, 1 December 2007 (UTC)

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/

title: User talk:Mikefsj


text:
User talk:Ohjohanna

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:01, 1 December 2007 (UTC)

title: User talk:Ohjohanna


text:
User talk:Simicita

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:01, 1 December 2007 (UTC)

title: User talk:Simicita


text:
User talk:Aguidam~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:01, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Aguidam. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Aguidam~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 22:55, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 04:29, 19 April 2015 (UTC)

title: User talk:Aguidam~enwikibooks


text:
User talk:0XQ

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:02, 1 December 2007 (UTC)

title: User talk:0XQ


text:
User talk:Tru2

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:02, 1 December 2007 (UTC)

title: User talk:Tru2


text:
User talk:Ahardy~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:02, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Ahardy. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Ahardy~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 22:55, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 04:29, 19 April 2015 (UTC)

title: User talk:Ahardy~enwikibooks


text:
User talk:Oilisgood

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:02, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Oilisgood. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Oilisgood~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:34, 17 March 2015 (UTC)

title: User talk:Oilisgood


text:
User talk:Mgmgthan

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:02, 1 December 2007 (UTC)

title: User talk:Mgmgthan


text:
User talk:Tarek.alkhalil

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:02, 1 December 2007 (UTC)

title: User talk:Tarek.alkhalil


text:
User talk:Lunsen~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:03, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Lunsen. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Lunsen~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:27, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 05:13, 19 April 2015 (UTC)

title: User talk:Lunsen~enwikibooks


text:
User talk:Heshamalmolla

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:04, 1 December 2007 (UTC)

title: User talk:Heshamalmolla


text:
User talk:Shridharsultanpur

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:04, 1 December 2007 (UTC)

title: User talk:Shridharsultanpur


text:
User talk:Karpeth

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:04, 1 December 2007 (UTC)

title: User talk:Karpeth


text:
User talk:Mtandeh

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:04, 1 December 2007 (UTC)

title: User talk:Mtandeh


text:
User talk:MF-Warburg

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:04, 1 December 2007 (UTC)

title: User talk:MF-Warburg


text:
User talk:Inderbirvohra

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:04, 1 December 2007 (UTC)

title: User talk:Inderbirvohra


text:
User talk:Jiryani

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:04, 1 December 2007 (UTC)

title: User talk:Jiryani


text:
User talk:Habibnia

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:05, 1 December 2007 (UTC)

title: User talk:Habibnia


text:
User talk:Meera jhaveri

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:05, 1 December 2007 (UTC)

title: User talk:Meera jhaveri


text:
User talk:Linhaiwa

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:05, 1 December 2007 (UTC)

title: User talk:Linhaiwa


text:
User talk:Tousifkamal

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:05, 1 December 2007 (UTC)

title: User talk:Tousifkamal


text:
User talk:Ringding~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:05, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Ringding. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Ringding~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:37, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 05:25, 19 April 2015 (UTC)

title: User talk:Ringding~enwikibooks


text:
User talk:Rod flynn

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:05, 1 December 2007 (UTC)

title: User talk:Rod flynn


text:
User talk:BlaseDavid~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:05, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called BlaseDavid. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name BlaseDavid~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:03, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 04:39, 19 April 2015 (UTC)

title: User talk:BlaseDavid~enwikibooks


text:
User talk:Jagtapjay

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:06, 1 December 2007 (UTC)

title: User talk:Jagtapjay


text:
User talk:Issamhk

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:06, 1 December 2007 (UTC)

title: User talk:Issamhk


text:
User talk:Vadivelkumar

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:06, 1 December 2007 (UTC)

title: User talk:Vadivelkumar


text:
User talk:Dblazewicz

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:06, 1 December 2007 (UTC)

title: User talk:Dblazewicz


text:
User talk:Gasdragon32

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:06, 1 December 2007 (UTC)

title: User talk:Gasdragon32


text:
User talk:EmoryM

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:06, 1 December 2007 (UTC)

title: User talk:EmoryM


text:
User talk:Weirdocat2~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:07, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Weirdocat2. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Weirdocat2~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:51, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 05:38, 19 April 2015 (UTC)

title: User talk:Weirdocat2~enwikibooks


text:
User talk:Simoneeprince

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:07, 1 December 2007 (UTC)

title: User talk:Simoneeprince


text:
User talk:Prasath~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:07, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Prasath. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Prasath~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:37, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 05:23, 19 April 2015 (UTC)

title: User talk:Prasath~enwikibooks


text:
User talk:Kaffrie j

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:08, 1 December 2007 (UTC)

title: User talk:Kaffrie j


text:
User talk:Nizick

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:08, 1 December 2007 (UTC)

title: User talk:Nizick


text:
User talk:MOKhut~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:08, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called MOKhut. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name MOKhut~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:27, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 05:13, 19 April 2015 (UTC)

title: User talk:MOKhut~enwikibooks


text:
Category:User is

de:Kategorie:User is eo:kategorio:uzanto is it:Categoria:Utenti is ja:Category:User is

title: Category:User is


text: User:Girdi/User many languages

title: User:Girdi/User many languages


text:
User talk:Magala~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 19:33, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Magala. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Magala~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:24, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 05:13, 19 April 2015 (UTC)

title: User talk:Magala~enwikibooks


text:
User talk:VSEPR~enwikibooks

Welcome message
Hello, and welcome to Wikibooks!

Here are some tips to help you get started:
 * To learn the wiki-markup-language syntax, see Help:Editing.
 * You should sign your name on Talk and vote pages using four tildes, like this: ~~~~
 * There is a box at the top of the edit window that will insert this, too; it looks like part of a signature.
 * Remember to conduct any editing experiments in the sandbox.
 * You can tell the community something about yourself in your userpage.
 * You can get to this page by clicking the tab at the top of the page labeled with your registered username.
 * Wikibooks is a collection of open-source textbooks. (What is Wikibooks).
 * If you are a Wikipedian, see Wikibooks for Wikipedians for a primer on how things work here (it's a little different).
 * If you want to base your work here on materials from Wikipedia, please use WB:RFI (requests for importation) to bring the material over in compliance with the GFDL.
 * If you're an instructor and plan on using Wikibooks for a class project, see Guidelines for class projects
 * Please say hello at the Reading Room with any questions or ideas.
 * Eventually, you might want to read the Manual of Style and Policies and Guidelines.
 * Help us by participating in policy and guideline creation.
 * Please take a look at Naming policy before starting a new book.
 * Remember to maintain a Neutral point of view.
 * Explore, be bold in editing pages, and have fun!

You will find more resources in Community Portal. If you want to ask a question, visit the Study help desk, the Reading Room, IRC channel or ask me personally on my talk page. For site news, see the Bulletin board. It might be a good idea to add that page to your "watchlist" so that you can see when any new information is posted there. You can do that by clicking the tab labeled "watch" at the top of the page.

Good luck! --Panic 20:16, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called VSEPR. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name VSEPR~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:49, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 05:37, 19 April 2015 (UTC)

title: User talk:VSEPR~enwikibooks


text:
User talk:Ronakino

Welcome message
Hello, and welcome to Wikibooks!

Here are some tips to help you get started:
 * To learn the wiki-markup-language syntax, see Help:Editing.
 * You should sign your name on Talk and vote pages using four tildes, like this: ~~~~
 * There is a box at the top of the edit window that will insert this, too; it looks like part of a signature.
 * Remember to conduct any editing experiments in the sandbox.
 * You can tell the community something about yourself in your userpage.
 * You can get to this page by clicking the tab at the top of the page labeled with your registered username.
 * Wikibooks is a collection of open-source textbooks. (What is Wikibooks).
 * If you are a Wikipedian, see Wikibooks for Wikipedians for a primer on how things work here (it's a little different).
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Good luck! --Panic 20:16, 1 December 2007 (UTC)

Book titles
While I appreciate your adding in the book titles for characters, I must point out that we had sort of decided that book titles would be removed, if a character did not have any role in that book. Thus, as (e.g.) the only mention of Eleanor Branstone was that she was sorted into Hufflepuff in GoF, we don't feel that there's any point in keeping headers for OotP, HBP, or DH for her. Chazz (talk) 23:35, 25 March 2008 (UTC)

title: User talk:Ronakino


text:
User talk:Aramaram~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 20:25, 1 December 2007 (UTC)

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The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

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title: User talk:Aramaram~enwikibooks


text:
User talk:KevinTraver~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 20:25, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called KevinTraver. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name KevinTraver~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

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Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:19, 17 March 2015 (UTC)

Renamed
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title: User talk:KevinTraver~enwikibooks


text:
User talk:Aaronliendo

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 20:26, 1 December 2007 (UTC)

title: User talk:Aaronliendo


text:
User talk:Quebradillano

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Girdi 21:00, 1 December 2007 (UTC)

title: User talk:Quebradillano


text: Category:Book:Introduction to Art

title: Category:Book:Introduction to Art


text:
User:Adrian Comollo

Introduction
This is Adrian Comollo, a college professor for many years. I think that wikibooks is a great tool to find info and develop learning and education. I am planning to help in some way in this sproject. In this page i will list my contributions and projects.

title: User:Adrian Comollo


text: Category:Book:Art History

title: Category:Book:Art History


text:
User talk:Valkster

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally. --Whiteknight (Page) (Talk) 21:46, 1 December 2007 (UTC)

title: User talk:Valkster


text:
User talk:Adrian Comollo

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally.--Girdi 21:54, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Adrian Comollo. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Adrian Comollo~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

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Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 22:55, 17 March 2015 (UTC)

title: User talk:Adrian Comollo


text:
User talk:Cfpappas~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally.--Girdi 21:55, 1 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Cfpappas. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Cfpappas~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:02, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 04:46, 19 April 2015 (UTC)

title: User talk:Cfpappas~enwikibooks


text:
User talk:Freydis Heimdallson

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally.

Talar du norsk/dansk? Hvis du vil hjælp på dansk eller norsk, du kan skrive på mitt Talk Page. Takk!

Talar du svenska? Om du vil ha hlälp på svenska, du kan skriva på mitt Talk Page. Tack!

Talarðu íslensku? Ef þig vantar hjálpina, þá þú getur skrifað í spjallinu mínu hérna. Takk! --Girdi 22:53, 1 December 2007 (UTC)

title: User talk:Freydis Heimdallson


text:
User:Bob Hegwood

Bob Hegwood is a Brain-Dead average guy who simply loves Celestia...

Nuff said!

title: User:Bob Hegwood


text:
Talk:Web 2.0 and Emerging Learning Technologies/GIS

Hi Bernie, I made a few minor cosmetic edits to your chapter - it looks really good, Doug


text:
Talk:Web 2.0 and Emerging Learning Technologies/Different Sectors

Hi Chris, made a few minor gramatical edits. Doug


text:
Famous Theorems of Mathematics/Geometry/Cones

Volume

 * Claim: The volume of a conic solid whose base has area b and whose height is h is $$ {1\over 3} b h $$.

Proof: Let $$\vec \alpha (t) $$ be a simple planar loop in $$\mathbb{R}^3 $$. Let $$ \vec v $$ be the vertex point, outside of the plane of $$ \vec \alpha $$.

Let the conic solid be parametrized by
 * $$ \vec \sigma (\lambda, t) = (1 - \lambda) \vec v + \lambda \, \vec \alpha (t) $$

where $$ \lambda, t \isin [0, 1] $$.

For a fixed $$ \lambda = \lambda_0 $$, the curve $$ \vec \sigma (\lambda_0, t) = (1 - \lambda_0) \vec v + \lambda_0 \, \vec \alpha (t) $$ is planar. Why? Because if $$ \vec \alpha(t) $$ is planar, then since $$ \lambda_0 \, \vec \alpha(t) $$ is just a magnification of $$ \vec \alpha(t) $$, it is also planar, and $$ (1 - \lambda_0) \vec v + \lambda_0 \, \vec \alpha(t) $$ is just a translation of $$ \lambda_0 \, \vec \alpha(t) $$, so it is planar.

Moreover, the shape of $$\vec \sigma (\lambda_0, t) $$ is similar to the shape of $$ \alpha(t) $$, and the area enclosed by $$ \vec \sigma(\lambda_0, t) $$ is $$ \lambda_0^2 $$ of the area enclosed by $$\vec \alpha(t) $$, which is b.

If the perpendiculars distance from the vertex to the plane of the base is h, then the distance between two slices $$\lambda = \lambda_0 $$ and $$\lambda = \lambda_1 $$, separated by $$ d\lambda = \lambda_1 - \lambda_0 $$ will be $$ h \, d\lambda $$. Thus, the differential volume of a slice is
 * $$ dV = (\lambda^2 b) (h \, d\lambda) $$

Now integrate the volume:
 * $$ V = \int_0^1 dV = \int_0^1 b h \lambda^2 \, d\lambda = b h \left[ {1\over 3} \lambda^3 \right]_0^1 = {1\over 3} b h, $$

Center of Mass

 * Claim: the center of mass of a conic solid lies at one-fourth of the way from the center of mass of the base to the vertex.

Proof: Let $$ M = \rho V $$ be the total mass of the conic solid where ρ is the uniform density and V is the volume (as given above).

A differential slice enclosed by the curve $$\vec \sigma(\lambda_0, t) $$, of fixed $$\lambda = \lambda_0$$, has differential mass
 * $$ dM = \rho \, dV = \rho b h \lambda^2 \, d\lambda $$.

Let us say that the base of the cone has center of mass $$\vec c_B $$. Then the slice at $$\lambda = \lambda_0 $$ has center of mass
 * $$ \vec c_S(\lambda_0) = (1 - \lambda_0) \vec v + \lambda_0 \vec c_B $$.

Thus, the center of mass of the cone should be
 * $$ \vec c_{cone} = {1\over M} \int_0^1 \vec c_S(\lambda) \, dM $$

 * $$ \qquad = {1\over M} \int_0^1 [(1 - \lambda) \vec v + \lambda \vec c_B] \rho b h \lambda^2 \, d\lambda $$

 * $$ \qquad = {\rho b h \over M} \int_0^1 [\vec v \lambda^2 + (\vec c_B - \vec v) \lambda^3] \, d\lambda $$

 * $$ \qquad = {\rho b h \over M} \left[ \vec v \int_0^1 \lambda^2 \, d\lambda + (\vec c_B - \vec v) \int_0^1 \lambda^3 \, d\lambda \right] $$

 * $$ \qquad = {\rho b h \over {1\over 3} \rho b h} \left[ {1\over 3} \vec v + {1\over 4} (\vec c_B - \vec v) \right] $$

 * $$ \qquad = 3 \left( {\vec v \over 12} + {\vec c_B \over 4}\right) $$

 * ∴ $$ \vec c_{cone} = {\vec v \over 4} + {3\over 4} \vec c_B $$,

which is to say, that $$\vec c_{cone}$$ lies one fourth of the way from $$\vec c_B $$ to $$\vec v$$.

Dimensional Comparison
Note that the cone is, in a sense, a higher-dimensional version of a triangle, and that for the case of the triangle, the area is
 * $$ {1\over 2} b h $$

and the centroid lies 1/3 of the way from the center of mass of the base to the vertex.

A tetrahedron is a special type of cone, and it is also a stricter generalization of the triangle.

Surface Area
Proof: The $$ \pi r^2 $$ refers to the area of the base of the cone, which is a circle of radius $$r$$. The rest of the formula can be derived as follows.
 * Claim: The Surface Area of a right circular cone is equal to $$ \pi r s + \pi r^2 $$, where $$r$$ is the radius of the cone and $$s$$ is the slant height equal to $$\sqrt{r^2+h^2}$$

Cut $$n$$ slices from the vertex of the cone to points evenly spread along its base. Using a large enough value for $$n$$ causes these slices to yield a number of triangles, each with a width $$dC$$ and a height $$s$$, which is the slant height.

The number of triangles multiplied by $$dC$$ yields $$C=2 \pi r$$, the circumference of the circle. Integrate the area of each triangle, with respect to its base, $$dC$$, to obtain the lateral surface area of the cone, A.

$$ A = \int_0^{2 \pi r} \frac{1}{2} s dC$$

$$ A = \left[ \frac{1}{2} s C \right]_0^{2 \pi r}$$

$$ A = \pi r s\! $$

$$ A = \pi r \sqrt{r^2 + h^2}$$

Thus, the total surface area of the cone is equal to $$ \pi r^2 + \pi r \sqrt{r^2 + h^2} $$


text:
Famous Theorems of Mathematics/Geometry/Conic Sections

Parabola Properties
Prove for point (x,y) on a parabola with focus (h,k+p) and directrix y=k-p, that: $$(x - h)^2 = 4p(y - k)$$ and that the vertex of this parabola is (h,k)


text:
Famous Theorems of Mathematics/Geometry/Pythagorean Theorem

In a right-angled triangle, the square of the hypotenuse is equal to the sum of the squares on the other two sides. Symbolically, for a right-angled triangle ABC with the right angle at C, $$AC^2 + BC^2 = AB^2$$, or $$a^2 + b^2 = c^2$$ where c is the hypotenuse.

Euclid's Proof
 This proof uses the following:

 Euclid provided this proof of the Pythagorean theorem in his Elements, Book I, Proposition 47.
 * Definition of a right angle
 * Definition of parallel
 * Definition of a square
 * The area of a square with side x is x2
 * All angles in a square are right angles
 * Line segments making right angles with the same line at the same point, on opposite sides, form a single straight line
 * All right angles are equal
 * Two triangles are congruent if two sides and the angle between them are respectively equal
 * Congruent triangles are equal in area
 * A triangle is half the area of a parallelogram on the same base in the same parallels

Let ABC be the right-angled triangle, with the right angle at C. Construct the squares ABDE, ACFG and BCHJ, and the line CKL perpendicular to AB and ED.

Consider the triangles GAB and CAE. Of these triangles, the sides GA and CA are equal because they are sides of the square ACFG. Similarly, the sides AB and AE are equal because they are sides of the square ABDE. Moreover, the angles GAB and CAE are equal, because they each contain the angle CAB plus a right angle of a square. The triangles GAB and CAE are thus congruent.

The area of the triangle GAB is half that of the square ACFG, because they share the side GA, and the point B is collinear with the square's opposite side FC. (This can be seen more clearly by noting that shearing GAB produces GAC, whose area is obviously half that of ACFG, and because shearing preserves area, so is the area of GAB.)

Similarly, triangle CAE has an area half that of the rectangle AKLE, because it shares the side AE, and C is collinear with KL.

But GAB and CAE are equal in area. Therefore, the square ACFG and the rectangle AKLE are equal in area.

By the same argument, the square BCHJ is equal in area to the rectangle BKLD. The two rectangles AKLE and BKLD make up the square ABDE, which is therefore equal to the area of ACFG plus that of BCHJ.


text:
Talk:Acoustics/Microphone Technique

I know very little about sound recording, but have heard of binaural recording and am thinking someone with more knowledge on the subject should add a bit about it. Particularly I'd be interested in knowing if there are problems with phase anomalies or bleeding as suggested when you have two microphones so close together.

title: Talk:Acoustics/Microphone Technique


text:
User talk:KEFIOX

Welcome message
Hello, and welcome to Wikibooks!

Here are some tips to help you get started:
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 * Explore, be bold in editing pages, and have fun!

You will find more resources in Community Portal. If you want to ask a question, visit the Study help desk, the Reading Room, IRC channel or ask me personally on my talk page. For site news, see the Bulletin board. It might be a good idea to add that page to your "watchlist" so that you can see when any new information is posted there. You can do that by clicking the tab labeled "watch" at the top of the page.

Good luck! --Panic 01:53, 2 December 2007 (UTC)

title: User talk:KEFIOX


text:
HSC Extension 1 and 2 Mathematics/Linear functions

The linear function y = mx + b and its graph
The linear function y = mx + b, for numerical values of m and b, is represented by a straight line.

The linear equation $$ mx + b = 0, (m \neq 0) $$ has one and only one root, which is rational if m and b are rational. This simple and apparently trivial result is worth noting; it does not extend to the quadratic equation.

equation of a line passing through a given point with given slope
The equation of a straight line passing through a fixed point (x1, y1) and having a given slope m is y – y1 = m(x – x1).

equation of a line passing through two given points
The equation of a straight line passing through two given points (x1, y1) and (x2, y2) may be deduced from the above by noting that the slope m must be the ratio of y2 – y1 to x2 – x1, i.e.,

$$m = \frac{y_2-y_1}{x_2-x_1}$$

Verification that the number pairs (x1, y1) and (x2, y2) do indeed satisfy the final equation.

the general equation ax + by + c = 0
The linear equation ax + by + c = 0 represents a straight line provided at least one of a and b is nonzero.

parallel lines
Parallel lines have the same slope

perpendicular lines
two lines with gradients m and m' respectively are perpendicular if and only if mm' = –1.

The equation of a line passing through the point of intersection of two given lines
Any line passing through the intersection of a1x + b1y + c1 = 0 and a2x + b2y + c2 = 0 has the equation

$$a_1x + b_1y + c_1 + k(a_2x + b_2y + c_2) = 0$$

where k is a constant, whose value for any particular line may be found using the additional information given to specify that line.

Regions determined by lines: linear inequalities
The straight line locus ax + by + c = 0 divides the rest of the number plane into two regions, satisfying the inequalities ax + by + c < 0 and ax + by + c > 0 respectively. Each region is a half-plane.

Two intersecting straight lines divide the rest of the plane into four regions, each defined by a pair of linear inequalities.

1. $$a1x + b1y + c1 > 0 and a2x + b2y + c2 > 0$$ 2. $$a1x + b1y + c1 > 0 and a2x + b2y + c2 < 0$$ 3. $$a1x + b1y + c1 < 0 and a2x + b2y + c2 > 0$$ 4. $$a1x + b1y + c1 < 0 and a2x + b2y + c2 < 0$$

Each such region is the intersection of two half-planes. Extension to the case of three lines intersecting in pairs, thus including the description of the interior of a triangle as the intersection of three half-planes or the common solutions of three linear inequalities in x and y.

Distance between two points and the (perpendicular) distance of a point from a line
The formula for the distance between two points should be derived, as should the formula for the perpendicular distance of a point (x1, y1) from a line ax + by + c = 0.

For example, the following proof may be used.

The equation of the line through P, perpendicular to the given line, is

$$bx - ay = bx_1 - ay_1 \;$$

This meets ax + by = – c at (x0, y0), where

$$(a^2 + b^2)x_0 = b^2x_1 - aby_1 - ac \;$$

$$(a^2 + b^2)y_0 = -abx_1 + a^2y_1 - bc \;$$

thus

$$x_1 - x_0 = \frac{(a^2 + b^2)x_1 - (b^2x_1 - abx_1 - ac)}{a^2 + b^2}$$

$$x_1 - x_0 = \frac{a(ax_1 + by_1 + c)}{a^2 + b^2}$$

and

$$y_1-y_0 = \frac{(a^2 + b^2)y_1 - (a^2y_1 - abx_1 - bc)}{a^2 + b^2}$$

$$y_1 - y_0 = \frac{b(ax_1 + by_1 + c)}{a^2 + b^2}$$

hence

$$(x_1 - x_0)^2 + (y_1 - y_0)^2 = \frac{a^2(ax_1 + by_1 + c)^2}{(a^2 + b^2)^2} + \frac{b^2(ax_1 + by_1 + c)^2}{(a^2 + b^2)^2}$$

$$(x_1 - x_0)^2 + (y_1 - y_0)^2 = \frac{(a^2 + b^2)(ax_1 + by_1 + c)^2}{(a^2 + b^2)^2}$$

$$(x_1 - x_0)^2 + (y_1 - y_0)^2 = \frac{(ax_1 + by_1 + c)^2}{a^2 + b^2}$$

taking the positive square root of the numerator gives ±(ax1 + bx1 +c), but distance can only be positive, so we use the absolute value. The denominator cannot be simplified and so is left with a positive square root sign.

$$\mbox{distance} = \frac{|ax_1 + by_1 + c|}{ \sqrt{a^2 + b^2}}$$

The mid-point of an interval
A direct derivation of the coordinates of the midpoint of a given interval should be presented.

midpoint of interval with endpoints (x1,y1) and (x2,y2) is

$$\left ( \frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2} \right )$$

Coordinate methods in geometry
Examples, illustrating the use of coordinate methods in solving geometrical problems, are to be restricted to problems with specified data. The following are typical problems.

1. Show that the triangle whose vertices are (1, 1), (–1, 3) and (3, 5) is isosceles. 2. Show that the four points (0, 0), (2, 1), (3, –1), (1, –2) are the corners of a square. 3. Given that A, B, C are the points (–1, –2), (2, 5) and (4, 1) respectively, find D so that ABCD is a parallelogram. 4. Find the coordinates of the point A on the line x = –3 such that the line joining A to B (3, 5) is perpendicular to the line 2x + 5y = 12.


text:
Talk:New Zealand History

Concise New Zealand History
I have decided to change the name of the book to a Concise New Zealand History. I have done this because I have found that enormous books, especially informational ones, can be intimidating to some readers and put them off reading the book. I would like this book to be an easy read. Helpfulstuffnz 03:24, 2 December 2007 (UTC)

title: Talk:New Zealand History


text:
MediaWiki talk:Deletereason-dropdown

Just a reminder that the VFD one will only do "normal" ones - so if its a multiple nominations thing, you have to do that manually. – Mike.lifeguard  | talk 04:24, 2 December 2007 (UTC)

title: MediaWiki talk:Deletereason-dropdown


text:
Talk:Rhetoric and Composition/Teacher's Handbook/Teachers Handbook: Editing

I was thinking of adding a possible teaching assignment, in this section of the book, that helps students to locate specific mechanical errors. I would then add one for looking further into the essay in terms of the content of the paper, which I suppose would fall more under revising, right? Is this the type of stuff we're looking to put in this section? --Kyoung 05:15, 2 December 2007 (UTC)


text:
HSC Extension 1 and 2 Mathematics/The quadratic polynomial and the parabola

It is the purpose of this section to develop the algebraic properties of the quadratic function and to relate these to the parabolic curve.

The quadratic polynomial ax2 + bx + c
The quadratic polynomial: ax2 + bx + c is a quadratic polynomial of the second degree or a quadratic expression. To distinguish x from the coefficients a, b, and c, it may be called an indeterminate.

When the domain of x is specified, the quadratic polynomial becomes a function. In all quadratic polynomials to be studied, the coefficients will be rational (usually integers) and the domain of x will be the set of real numbers. The quadratic function will be expressed as

$$y = ax^2 + bx + c$$

Graph of a quadratic function
Graphs of quadratic functions: very simple examples will have already been studied. In giving further practice in graphing quadratic functions the teacher should stress, in each particular case, points of general interest, e.g. (1) that for large values of x the term ax2 effectively determines the value of the function; (2) the relation between the graph and the roots of the quadratic equation ax2 + bx + c = 0. Examples should include cases where the graph has respectively two points, one point, and no points in common with the x-axis.

Roots of a quadratic equation
A value of x which makes y = 0 is a root of the quadratic equation ax2 + bx + c = 0. The term ‘zero of the polynomial’ might be introduced at the discretion of the teacher.

Quadratic inequalities
Quadratic inequalities: the graph of the quadratic function should be used to solve quadratic inequalities, e.g. find the values of m for which 12 + 4m – m2 > 0.

General theory of quadratic equations, relation between roots and coefficients
Revision of simple quadratic equations which can be solved by factorisation.

Solution by ‘completing the square’ in particular cases.

It will be noted that, applied to an equation such as x2 + 2x + 2 = 0 the method leads to (x + 1)2 + 1 = 0, showing that no (real) value of x can be found which willmake x2 + 2x + 2 equal to zero. The traditional formula is derived by applying the method of completing the square to the general quadratic.

The relation α + ß = –b/a, αß = c/a between the roots α, ß of a quadratic equation and its coefficients a, b, c, can be derived directly from the general solution. If an equation has roots α, ß, then it is of the form a(x–α) (x–ß) = 0 or a[x2 – (α + ß)x + αß] = 0.

Exercises involving finding equations whose roots bear stated relations to the roots of some other equation are not included in this syllabus.

The discriminant
The discriminant is to be defined and used to determine the condition for real, equal, or rational roots; pupils should be reminded of the meaning of the word ‘discriminate’ in ordinary language. By actually solving the general quadratic, an important existence theorem has been established: A quadratic equation may have two (real) roots, one root or no roots. It does not have more than two roots.

Classification of quadratic expressions; identity of two quadratic expressions
from $$ax^2 + bx + c = a \left [ \left (x + \frac{b}{2a} \right )^2 + \frac{4ac - b^2}{4a^2} \right ]$$

(the general result would of course be preceded by particular examples), the conditions for positive definite, negative definite and indefinite quadratic expressions are derived. Only if b2 > 4ac can the expression take both positive and negative values, and it has the same sign as a for all values of x except those lying between the roots of the equation ax2 + bx + c = 0. Also, ax2 + bx + c has its greatest or least value when x = – b/2a and this greatest or least value is (4ac – b2)/4a.

An alternative treatment is to consider the roots of the expression

$$f(x) = ax^2 + bx + c, a \ne 0 $$

1. Suppose the discriminant Δ = b2 – 4ac < 0. Then f cannot be zero. Thus if Δ 0, then f > 0 for all values of x, and is called positive definite. If Δ < 0 and a < 0, then f < 0 for all values of x, and is called negative definite. 2. If Δ > 0, then f = 0 for two distinct values of x, say x1 and x2. The greatest or least value of f occurs at x = 1/2 × (x1 + x2) and f takes both positive and negative values. 3. If Δ = 0, then f = 0 for one value of x, at x = – b/2a. Then f >= 0 if a > 0, and f <= 0 if a < 0, for all values of x. 4. the turning point of f is at df/dx = 0 (when the gradient of f is 0), i.e. at x = – b/2a.

Students should learn to find the turning point and zeros (if any) of f in order to sketch the graph of f.

Theorem: If a1x2 + b1x + c1 = a2x2 + b2x + c2 for more than two values of x, then

$$a_1 = a_2, b_1 = b_2, c_1 = c_2.$$

The proof reduces to a discussion of the equation ax2 + bx + c = 0 with a = a1 – a2, b = b1 – b2, and c = c1 – c2. Beginners find the proof elusive. Work on quadratic equations has shown that ax2 + bx + c = 0 can exist for at most two values of x. There is one exception: if a = b = c = 0, the expression exists for all values of x. If it is given that ax2 + bx + c = 0 for more than two values of x, we must conclude that a = b = c = 0. Otherwise the data presents us with a contradiction. Examples should include the expression of a quadratic polynomial ax2 + bx + c in the form Ax(x – 1) + Bx + C, where C = c, A = a, B = a + b, the fitting of a quadratic to three given function values, and similar identities.

Equations reducible to quadratics
Examples of the following kinds should be discussed

 * 1) $$x^4 - 4x^2 - 12 = 0$$
 * 2) $$(x + 1)^2 = 4x^2$$
 * 3) $$9^x - 4(3)^x + 3 = 0$$
 * 4) $$(x + \frac{1}{x})^2 - 5(x + \frac{1}{x}) + 6 = 0$$

The parabola defined as a locus
A parabola is defined as the locus of a point which moves so that its distance from a fixed point is equal to its distance from a fixed line.

Definitions of focus, directrix, vertex, axis and focal length should be given and illustrated by examples.

The equation x^2 = 4Ay
If the fixed point is (0, A) and the fixed line is y = –A, the equation of the locus is

$$x^2 = 4Ay$$ or $$y = x^2/4A$$

Use of change of origin when vertex is not at (0, 0)
By considering, for example, cases where: (a) the focus is (x0, A) and the directrix is y = –A, (b) the focus is (0, y0 + A) and the directrix is y = y0 –A, (c) the focus is (x0, y0 + A) and the directrix is y = y0 –A,

the interpretation of the equation

$$(x - x_0)^2 = 4A(y - y_0)$$

as representing a parabola with vertex (x0, y0), axis x = x0, focus (x0, y0 + A) and directrix y = y0 – A should be treated. Similarly, the equations (x – x0)2 = –4A(y – y0), (y – y0)2 = 4A(x – x0), (y – y0)2 = –4A(x – x0) should be discussed.

Starting with the general quadratic function

$$f(x) = ax^2 + bx + c, a \ne 0 $$

and rewriting it as

$$\left ( x + \frac{b}{2a} \right ) = \frac{1}{a} \left ( y + \frac{b^2 - 4ac}{4a} \right )$$

Practice should also be given in finding the equation of a parabola given for example, its vertex, axis and focal length, or in finding the equation of the family of parabolas having, for example, the line x = x0 as axis and a given vertex or focal length or passing through a given point.


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User:Mirab3lla

Hi!My name is Mirabela and I like to learn and discover new things by myself!I love learning languages and discovering new things about human psychology.

title: User:Mirab3lla


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Talk:Suomen kieli ulkomaalaisille/Sisältö/Genetiivi

Confusion
I find this page confusing. The arguments are unnecessarily difficult to follow, partly because of the examples chosen, partly because of approach, but also because of errors. For instance, I believe that: "Tämä auto on Timon" mean: "THIS car is Timo's", or "THIS is Timo's car", or "THIS is the car of Timo" etc. and not:  "THAT car is Timo's" etc. "Tuo on Timon auto" would be better for "That is etc". Though Here is, There are etc don't transalate well. Simlarly: "Pesin isän auton" I believe means: "I washed dad's car" not "I have washed dad's car".

Could there be more and simpler and more consistent examples given? I would throw in my twopenny worth but my Finnish is very poor.

Secondly, IMHO the attempt to write the page for English speakers learning Finnish and Finnish speakers learning Finnish fails. The irregularity of English is not equivalent to the irregularity of Finnish. Trying to make a one-to-one match between the two fails. So why not be consistent? Keep the text in English (therefore including the title) and don't spend time explaining English grammer. English speakers know the various forms of the Genitive. Simlarly expanding everything with "he is she is" variants interrupts te natural flow of language. We do not speak like this so why write like it? If you have to use "s/he". Finnish doesn't discriminate and that too brings issues. Language is imperfect.

IMHO I also think that concentrating on Finnish grammer is a mistake. The language is highly irregular and a grammer can only ever be so much help. The definitive grammer is the language! If an attempt is made to contain all the grammatical exceptions here the page will become even more unwieldy. More progressive complexity in the explanations would help.

Just for me, what does "-Vn" mean?

LookingGlass 10:36, 2 December 2007 (UTC)


text:
Horticulture/Acer palmatum

Acer palmatum (Japanese Maple or Smooth Japanese Maple; is a species of maple native to Japan and South Korea. Some authorities state it is also native to China, but the Flora of China treats similar native Chinese maples as separate species.

Description
It is a deciduous shrub or small tree reaching heights of 6–10 m, rarely 16 m, often growing as an understory plant in shady woodlands. It may have multiple trunks joining close to the ground. In habit, it is often shaped like an upside-down pyramid (especially when younger) or takes on a dome-like form, especially when mature. The leaves are 4–12 cm long and wide, palmately lobed with five, seven, or nine acutely pointed lobes. The flowers are produced in small cymes, the individual flowers with five red or purple sepals and five whitish petals. The fruit is a pair of winged samaras, each samara 2–3 cm long with a 6–8 mm seed. The seeds of Japanese maple and similar species require stratification in order to germinate.

Even in nature, Acer palmatum displays considerable genetic variation. As such, even seedlings with the same parent tree can show difference in such aspects as leaf size and shape, and colour.

Growing Conditions
Like most maples, it is fairly adaptable but grows best in deep, well-drained, fertile soils. It grows well as an understory tree, tolerating fairly dense shade. However, they also cast deep shadows, making planting other plants under them difficult. Seedlings can become a nuisance, and has the potential to become invasive in woodlands.

Varieties
Three subspecies are recognised:
 * Acer palmatum subsp. palmatum. Leaves small, 4–7 cm wide, with five or seven lobes and double-serrate margins; seed wings 10–15 mm. Lower altitudes throughout central and southern Japan (not Hokkaido).
 * Acer palmatum subsp. amoenum (Carrière) H.Hara. Leaves larger, 6–12 cm wide, with seven or nine lobes and single-serrate margins; seed wings 20–25 mm. Higher altitudes throughout Japan and South Korea.
 * Acer palmatum subsp. matsumurae Koidz. Leaves larger, 6–12 cm wide, with seven (rarely five or nine) lobes and double-serrate margins; seed wings 15–25 mm. Higher altitudes throughout Japan.

Cultivars
Over 1,000 cultivars have been chosen for particular characteristics, and can only be propagated by grafting. Some of these are not in cultivation in the Western world or have been lost over the generations, but many new cultivars are developed each decade. These cultivars are chosen for such phenotypical aspects as leaf shape and size (shallowly to deeply lobed, some also palmately compound), leaf colour (ranging from chartreuse through dark green or from red to dark purple, others variegated with various patterns of white and pink), bark texture and colour, and growth pattern. Some cultivars are sturdy trees that are larger and more hardy or vigorous than the species. Many are shrubs rarely reaching over 0.5 m in height. A few very delicate cultivars are typically grown in pots and rarely reaching heights of more than 30 cm. Some of the more distorted or dwarfed cultivars are grown from witch's brooms, but more are based upon clippings taken from plants that are mutated and/or have been artificially selected over many generations.

Many cultivars have characteristics that come into prominence during different seasons, including the colour of new or mature leaves, extraordinary fall colour, colour and shape of samaras, or even bark that becomes more brightly coloured during the winter. Some cultivars can scarcely be distinguished from others unless labeled. In some cases, identical cultivars go by different names, while in other cases, different cultivars may be given the same name.

Example cultivars
A selection of notable or popular cultivars, with brief notes about characteristics that apply during at least one season, includes the following.
 * 'Aka shigitatsu sawa', pinkish-white leaves with green veins
 * 'Ao ba jo' - a dwarf with bronze-green summer foliage
 * 'Atropurpureum' - wine-red, including new branches
 * 'Bloodgood' - an improved cultivar of 'Atropurpureum'
 * 'Butterfly' - small leaves with white borders
 * 'Dissectum' - lace-like leaves, drooping habit
 * 'Golden Pond' - greenish-yellow summer foliage
 * 'Goshiki koto hime' - a delicate, variegated dwarf
 * 'Higasa yama' - crinkled leaves variegated with yellow
 * 'Hupp's Dwarf' - a small, dense shrub with miniature leaves
 * 'Issai nishiki kawazu' - very rough, rigid bark
 * 'Kagiri nishiki' - similar to 'Butterfly' but more pinkish tones
 * 'Karasu gawa' - slow-growing variegate with brilliant pink and white
 * 'Katsura' -yellow-green leaves tipped with orange
 * 'Koto no ito' - light green, thread-like leaves
 * 'Little Princess' - a sparsely-branched dwarf with irregular habit
 * 'Mama'- a bushy dwarf with extremely variable foliage
 * 'Masu murasaki' - a shrubby tree with purple leaves
 * 'Mizu kuguri' - orange-tinted new growth and very wide habit
 * 'Nishiki gawa' - pinetree-like park desirable for bonsai
 * 'Nomura nishiki' - dark purple, lace-like leaves
 * 'Ojishi' - tiny dwarf, grows only a few centimetres per year
 * 'Osakazuki' - tree-like shrub with spectacular autumn colour
 * 'Peaches and Cream' - similar to 'Aka shigitatsu sawa'
 * 'Pink Filigree' - finely dissected, brownish-pink leaves
 * 'Red Filigree Lace' - delicate, finely dissected, dark purple
 * 'Sango kaku' - "coralbark maple" with pinkish-red bark
 * 'Seiryu' - a green, tree-like shrub with finely dissected leaves
 * 'Shikage ori nishiki'- vase-shaped shrub with dull purple foliage
 * 'Skeeter's Broom' - derived from a 'Bloodgood' witch's broom
 * 'Tamukeyama' - finely dissected, dark purple, cascading habit
 * 'Tropenburg' - slender, upright grower, convex lobes, purple leaves
 * 'Tsuma gaki' - yellow leaves with reddish-purple borders
 * 'Uki gumo' - prominent white-speckled variegation
 * 'Waka momiji' - another "coralbark" maple
 * 'Yuba e' - upright tree with scarlet variegation

In addition to the cultivars described above, a number of Cultivar Groups have been naturally selected over time to such an extent that seedlings often resemble the parent. Many of these are sold under the same name as the cultivars, or even propagated by grafting, so there is often much ambiguity in distinguishing them. In particular, a number of dark-red Japanese maples are sold with the names "Atropurpureum" and "Bloodgood". Many maples with delicate lace-like foliage are sold under names such as "Dissectum", "Filigree" and "Laceleaf".

Similar species
The term "Japanese Maple" is also sometimes used to describe other species within series Palmata that are similar to A. palmatum and are native to China, Korea or Japan including:
 * ../Acer duplicatoserratum/ (syn. A. palmatum var. pubescens Li)
 * ../Acer japonicum/ - Downy Japanese Maple
 * ../Acer pseudosieboldianum/ - Korean Maple
 * ../Acer shirasawanum/ - Fullmoon Maple
 * ../Acer sieboldianum/ - Siebold's Maple

Given that these maples are phenotypically variable within each species, and may hybridise with one another, distinguishing between them may be a matter of gradient speciation. In commercial propagation, A. palmatum is often used as rootstock for these other species.

Uses
Japanese Maple has been grown in temperate areas around the world since the 19th century and has been cultivated in Japan for centuries. In Japan it is used as an accent tree in Japanese gardens, providing gentle shade next to the house in the summer and beautiful colors in fall. Numerous cultivars are readily available commercially and are a popular item at garden centres and other retail stores in Europe and North America. Red-leafed cultivars are the most popular, followed by cascading green shrubs with deeply dissected leaves. It is also a popular and appropriate choice for bonsai enthusiasts and has been used in this art throughout its history.

Maintenance
Like all maples, A. palmatum tolerates heavy pruning, but should not be pruned in winter due to severe bleeding that can occur during early spring.

Pests and Diseases
See ../Acer/ for a list of pests and diseases.

title: Horticulture/Acer palmatum


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User talk:Sambeckwith~enwikibooks

Three pints of milk in a Yorkshire pudding? I tried this recipe and ended up with a big vat of slop...

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User talk:Bwirtz

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User talk:Ehtesham~enwikibooks

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User talk:Kaosmagick

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Chaos Magic
I've tagged this page for deletion since it doesn't seems to be a textbook, though I'm not sure what it is. Please comment on the talk page and remove if you wish to contest the deletion. – Mike.lifeguard  | talk 21:23, 2 December 2007 (UTC)

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User talk:Nintendo64

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History of Nintendo
The subpages in this "book" are direct copy-and-pastes from Wikipedia; this is a copyright violation. As well, this "book" is a macropedia, which is not within project scope. The book has therefore been deleted per policy. If you wish to contest deletion, you may do so at WB:VFU. – Mike.lifeguard  | talk 21:37, 2 December 2007 (UTC)

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User talk:Larsonk~enwikibooks

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 * Not a big deal, but we don't sign contributions except on discussion pages. Attribution is kept in the history for each page. Thanks! – Mike.lifeguard  | talk 04:37, 9 December 2007 (UTC)

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Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally --Girdi 17:05, 2 December 2007 (UTC)

title: User talk:Umarpassion


text:
User talk:Tahani~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally --Girdi 17:05, 2 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Tahani. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Tahani~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:49, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 05:35, 19 April 2015 (UTC)

title: User talk:Tahani~enwikibooks


text:
User talk:Omerweiss~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally --Girdi 17:05, 2 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Omerweiss. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Omerweiss~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:34, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 05:19, 19 April 2015 (UTC)

title: User talk:Omerweiss~enwikibooks


text:
User talk:Krisdraper

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally --Girdi 17:05, 2 December 2007 (UTC)

title: User talk:Krisdraper


text:
User talk:Mahmoodbanna

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally --Girdi 17:05, 2 December 2007 (UTC)

title: User talk:Mahmoodbanna


text:
User talk:Aravind 3222

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally --Girdi 17:05, 2 December 2007 (UTC)

title: User talk:Aravind 3222


text:
User talk:Ppaappi

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally --Girdi 17:06, 2 December 2007 (UTC)

title: User talk:Ppaappi


text:
User talk:Slp1a

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally --Girdi 17:06, 2 December 2007 (UTC)

title: User talk:Slp1a


text:
User talk:Mbrooks~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally --Girdi 17:06, 2 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Mbrooks. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Mbrooks~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:29, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 05:14, 19 April 2015 (UTC)

title: User talk:Mbrooks~enwikibooks


text:
User talk:Jaimosh

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally --Girdi 17:06, 2 December 2007 (UTC)

title: User talk:Jaimosh


text:
User talk:Sparsh pd

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally --Girdi 17:06, 2 December 2007 (UTC)

title: User talk:Sparsh pd


text:
User talk:Eveleenling

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally --Girdi 17:06, 2 December 2007 (UTC)

title: User talk:Eveleenling


text:
User talk:Njl~enwikibooks

Come introduce yourself at the new users page. If you have any questions, you can ask there or contact me personally --Girdi 17:06, 2 December 2007 (UTC)

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Njl. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Njl~enwikibooks that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:32, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 05:18, 19 April 2015 (UTC)

title: User talk:Njl~enwikibooks