# Anyone have a TI-89 calculator? Help!

**URL:** <https://boards.straightdope.com/t/anyone-have-a-ti-89-calculator-help/332854>\
**Category:** In My Humble Opinion\
**Created:** [November 27, 2005, 12:01am UTC](https://boards.straightdope.com/t/anyone-have-a-ti-89-calculator-help/332854 "2005-11-27T00:01:53Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Corii](https://avatars.discourse-cdn.com/v4/letter/c/aeb1de/32.png) [@Corii](https://boards.straightdope.com/u/Corii)\
**Post date:** [November 27, 2005, 12:01am UTC](https://boards.straightdope.com/t/anyone-have-a-ti-89-calculator-help/332854/1 "2005-11-27T00:01:53Z")

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I cannot find the comma key on my TI-89 Titanium graphing calculator. When I searched google for more information, the only hints I got were that it was above the [ key (mine is a semicolon there) or below the cosine key (mine is a } there). Anyone actually have one of these who knows where the comma key is? I can’t do derivaties or graphs without it. ☹

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**Author:** ![astro](https://avatars.discourse-cdn.com/v4/letter/a/9dc877/32.png) [@astro](https://boards.straightdope.com/u/astro)\
**Post date:** [November 27, 2005, 12:20am UTC](https://boards.straightdope.com/t/anyone-have-a-ti-89-calculator-help/332854/2 "2005-11-27T00:20:24Z")

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> [@Corii](#):
>
> I cannot find the comma key on my TI-89 Titanium graphing calculator. When I searched google for more information, the only hints I got were that it was above the [ key (mine is a semicolon there) or below the cosine key (mine is a } there). Anyone actually have one of these who knows where the comma key is? I can’t do derivaties or graphs without it. ☹

Full manual here (pdf file)  
[TI 89 Manual](http://education.ti.com/downloads/guidebooks/eng/89ti/TI89TitaniumGuidebook_Part2_EN.pdf)

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**Author:** ![Corii](https://avatars.discourse-cdn.com/v4/letter/c/aeb1de/32.png) [@Corii](https://boards.straightdope.com/u/Corii)\
**Post date:** [November 27, 2005, 12:23am UTC](https://boards.straightdope.com/t/anyone-have-a-ti-89-calculator-help/332854/3 "2005-11-27T00:23:15Z")

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> [@astro](#):
>
> Full manual here (pdf file)  
> [TI 89 Manual](http://education.ti.com/downloads/guidebooks/eng/89ti/TI89TitaniumGuidebook_Part2_EN.pdf)

Hah thanks I found it, looking at the keymap the little icon had been rubbed off. Good grief.

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**Author:** ![Wesley\_Clark](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/wesley_clark/32/20581_2.png) [@Wesley\_Clark](https://boards.straightdope.com/u/Wesley_Clark)\
**Post date:** [November 27, 2005, 12:24am UTC](https://boards.straightdope.com/t/anyone-have-a-ti-89-calculator-help/332854/4 "2005-11-27T00:24:45Z")

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Above the 9, to the right of the ).

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**Author:** ![TJdude825](https://avatars.discourse-cdn.com/v4/letter/t/dec6dc/32.png) [@TJdude825](https://boards.straightdope.com/u/TJdude825)\
**Post date:** [November 27, 2005, 11:34pm UTC](https://boards.straightdope.com/t/anyone-have-a-ti-89-calculator-help/332854/5 "2005-11-27T23:34:18Z")

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Next time you lose track of a character or command, you can always get it in the catalog (above the Z, and under APPS)