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Texas Instruments TI-89 Calculator - Page 6 Questions & Answers
I couldn't turn my calculator all of a sudden. How
Don't send it in for repairs just yet.
TI calculators have an annoying habit of dimming the screen, especially when the batteries are changed, so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.
If this doesn't do it, press and hold the 2ND, left-arrow, and right-arrow keys, then press and release the ON key.
If this doesn't do it, please reply to this post and we'll go on from there.
7/22/2012 7:48:08 PM •
Texas...
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Answered
on Jul 22, 2012
Titanium freezes on menu
Hi if non of the keys are working dont install the OS its possible that one of the keys is stuck or some acid from the battery is leaked inside if you can open the calc check for spots of liquid or acid
6/17/2012 11:25:06 PM •
Texas...
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Answered
on Jun 17, 2012
How to install additional software
You can write programs and type them in. You can also find programs on the Internet and transfer them to the calculator. For that you need TI Silver cable, TI Connect software you can download from education.ti.com. Programs are available at education.ti.com or at TIcalc.org. The use of Third-party software is at your own risk.
6/14/2012 10:21:44 AM •
Texas...
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Answered
on Jun 14, 2012
How do I find the log of e?
Press the diamond key (just below the 2ND key) and then the ENTER key. Diamond-ENTER will always convert symbolic results to numeric. If you want numeric results always, press MODE F2, move down to the Exact/Approx line, press right-arrow, select APPROXIMATE, and press ENTER twice.
5/31/2012 4:48:08 PM •
Texas...
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Answered
on May 31, 2012
How do you enter mixed numbers
A mixed number is made up of an integer part and a fraction part. Thus you enter the integer, you press + than enter the fraction part.
5/5/2012 12:14:10 AM •
Texas...
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Answered
on May 05, 2012
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.
4/17/2012 10:35:11 PM •
Texas...
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Answered
on Apr 17, 2012
TI-89 incorrect answer
You're not doing anything wrong. The TI-89 simply does not reduce odd powers in square roots. If you change the 13 to 14 you'll see a rather different result.
4/11/2012 6:29:25 PM •
Texas...
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Answered
on Apr 11, 2012
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