20 Most Recent Texas Instruments TI-30XA Calculator - Page 2 Questions & Answers

6. [EE]21

A rectangle is a 2D figure and is not a solid. Its area is the product of one side by the other side. Area =length*width.

Change the computational mode.

Panasonic LR-44, Ray-Ovac RW-82, Union Carbide (Everyready) A-76 work on this calculator.

Press the x^2 key.

A syntax error occurs if the command is not correctly entered.

Find the standard deviation and square the value.

Not clear. Is it 6th root of 1.597 or 6* SQRT(1.597)?

Your question is not clear. To calculate the reciprocal of a number on display use the x^-1 or 1/x key, or just enter 1/ number.

.12 2nd e^ X 100

To take the log of a number, enter the number then press the LOG button, then the =. To take the log of a negative number, enter the negative number using the +/- key just to the right of the decimal point. To calculate the negative of a log, calculate the log and then negate it using +/-. To calculate the antilog (inverse logarithm), press 2nd then LOG.Bear in mind that LOG is the common (base-10) logarithm. For the natural (base-e) logarithm, use the LN key to its right.

Enter the value n. Press 2ND then nCr. Enter the value r. Press the = key.

You can download a Guidebook from http://education.ti.com

this can only be done in Multi line calculators.

5e means 5 times e. To get e, enter 1 and then push the "2nd" button and the "LN" button (for e to the power of 1). Once you get e, push the multiply button, the 5 button and then equals.

First remove the six screws on the back cover. The top of the calculator will be still attached by three clips. Twist the calculator slightly to make the lower end of the gray part of the calculator pop up from the black base. Pry the base off by applying gentle pressure or by prying the sides outward. Be sure to short out the "reset" button after changing the batteries, by rubbing a coin over it.

Try replacing the batteries.Here's the official word from TI on replacing the batteries on the TI-30XA.

1. Remove slide cover. Place calculator face down.
2. Using a small Phillips screwdriver, remove screws from back case.
3. Remove back case.
4. Remove discharged batteries.
Caution: Avoid contact with other calculator components while changing batteries.
5. Install new batteries positive side up, as shown on diagram inside case.
6. Replace back case, and then replace screws.
7. Press off on on.
Caution: Dispose of old batteries properly. Do not incinerate batteries or leave where a child can find them.
Your calculator cannot hold data in memory when batteries are removed or become discharged.