Question about Texas Instruments TI-89 Calculator

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Need keyboard display-use information

With no keyboard display and how to use it manual I cannot use the TI-89. where is the information available on-line

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Re: need keyboard display-use information

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On my TI-89 everything displayed on the screen is a mirror image, left to right. All functions work as expected, but the display must be read in a mirror to see usual display.

Reset your TI-89

Press left and right arrow and 2nd keys simultaneosly, hold it and then press ON. Release all keys and you will reset TI 89

Sep 21, 2013 | Texas Instruments TI89 Titanium Scientific...

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The screen on my TI-89 Titanium turned blue after replacing batteries? How do I fix this? It turns on and off but does not respond to any other buttons.

If you cannot see anything on the screen, you may need to adjust the graphing TI 89 Titanium calculator contrast :

1.To darken the screen, press and release 2nd key, and then press and hold up-arrow key until the display is sufficiently dark.

2. To lighten the screen, press and release 2nd key, and then press and hold down-arrow key until the display is sufficiently light.

Sep 01, 2012 | Texas Instruments TI-89 Calculator

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Ti-89 titanium diagnostics

There is no DiagnosticsOn command in the TI 89 Titanium. The command exists on the TI83/84PLUS where it displays the r and r^2 coefficients. On the TI89 , the correlation coefficient and the determination coefficient (r, r^2) are displayed by default among the statistics if THE REGRESSION MODEL includes them. If they are not defined by the regression model they will not be displayed. In short, you do not have to turn diagnostics ON.

Apr 17, 2012 | Texas Instruments TI-89 Calculator

2 Answers

I cant really read some of the options on the screen on my ti 89....the letters are so blurry......what can i do ?????

Hey shrestha,

I've never seen a calculator with display clarity problems.

The only option I could think to offer you is to attempt to adjust the contrast. However, I'm not sure whether or not your TI-89 actually has an option to change the contrast. Because I own a TI-89 Titanium - and although its a wonderful calculator - it does not allow the user to alter the darkness/brightness of the display.

Call Texas Instruments: 1-800-TI- CARES...They are pretty helpful with common questions like this.


The Math Cheetah

Mar 13, 2011 | Texas Instruments TI-89 Calculator

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How ti type log in ti 89?

You can download the manual from:
On page 79, you will find:
Find log (x,b). You can enter "log" on the entry line by typing LOG on the keyboard, or by pressing the key with the diamond and then 7.
Press [diamond] 7 X , [alpha] b ) [ENTER]

Nov 11, 2010 | Texas Instruments TI-89 Calculator

1 Answer

Looking for prgmPivot for Ti-89

Try contacting TI if there was no soluntion in your Operator's Manual.

Oct 17, 2009 | Texas Instruments TI-89 Calculator

1 Answer

When I turn the switch on, ti-89 titanium does not turn on.

If you connect calculator to computer using Ti connect device explorer you might be able to see what files are on the calculator. I don't know if you downloaded from the web but, 3rd party programs and shells tent to miss up the calculator. This would able you to delete out possible problems which could be re installed later.

Sep 22, 2009 | Texas Instruments TI-89 Calculator

2 Answers

I neeed the manual for the ti-89 calculator....

Hi, You can download the required manuals from:

Hope this solves your problem. For more help and clarifications, please reply to this post. Thanks

Aug 26, 2009 | Calculators

3 Answers

IF I HAVE TWO equations 5x+8y=54, AND -9x+y=26 how do i solve

use the simultaneous equation solver software available on ur ti-89 and enter the equation in the form of augmented matrix and you will get ur answer.

Dec 03, 2008 | Texas Instruments TI-89 Calculator

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