20 Most Recent Texas Instruments TI-30XA Calculator - Page 5 Questions & Answers

Correct. The 30Xa will not display commas.

1 11/16

Enter the value then press 2nd COS. For example, to calculate the inverse cosine of 0.5, press . 5 2nd COS =

It's marked y-superscript-x and is just above the divide key.

About 22.2%

Press 2nd [CSR] to clear the statistical data.

The factorial is the second function of the 3 key.

It's the second function of the 3 key.

To calculate the logarithm of x to base 3, divide the log of x by the log of 3. log(x)/log(3) or ln(x)/ln(3)

The TI-30XA calculates logarithms to base e and base 10. You can calculate the log of x to any base b by calculating the logarithm of x and dividing it by the logarithm of b: log(x)/log(b) or ln(x)/ln(b).

Raise e to the first power. Press 1 2nd e^x =

Use the square-root key, two keys above the 9 key. For example, to calculate the square root of 2, press 2 square-root =

Raise to the 1/40 power. For example, to calculate the 40th root of 2, press 2 y^x ( 1 / 4 0 =

The calculator handles logarithms to base e and base 10. You can calculate the log of x to any base b by dividing the log of x by the log of b. Calculate log(x)/log(b) or ln(x)/ln(b).

Use the +<>- key just to the right of the decimal point key.

If you mean the standard deviation, there are two shifted keys on the third row marked with a lower-case Greek sigma. sigma_xn is the population standard deviation and sigma_xn-1 is the sample standard deviation.

Press the DRG key to cycle through the three angular modes: degree, radian, grad. Be aware that one of the indicators will always be lit to show which mode is currently set.

Use the y^x key just above the divide key. For example, to raise 2 to the 4th power, press 2 y^x 4 =