20 Most Recent Texas Instruments TI-89 Calculator - Page 6 Questions & Answers

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.

Clean the battery placement area and place new batteries.

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

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.

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.

This is to be expected. A standard deviation of 0 means that all the data points are identical. Asking for the point below which .025 of the data lie is meaningless.

Well it is just a calculator, it cannot do all the possible integrals you might think of. You may try to help it a bit by using the usual techniques that you were taught to transform the integral into another it might be able to find: change of variables, integration by parts. You cannot let the success on your AB or BC exam depend solely on the calculator.

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.

Not analytically. It can do it numerically.

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.

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.

Your question is not quite precisely, and I am give to you two possible options as a solution for your problem:First option 1.13x10^(1.7858-0.040x0.1886)=67.8164Second option 1.13log(1.7858-0.040x0.18860=0.282494See captured images

At first, y=2+3(ln1-lnx), logA/B=logA-logBYou have to know that ln1=0 because by the definition e^(0)=1And finally y=2-3ln(x)See the graph of this function on the image below

2 - 3 ln(x)