20 Most Recent Texas Instruments TI-30 XIIS Calculator - Page 9 Questions & Answers

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2nd [square-root]

The 2nd is the shift key at the upper-left corner of the screen. The square root is the shifted function of the x^2 key, just to the left of the 7 key.

The TI-30 XIIS, like most calculators, cannot do logarithms to base 5 directly. You need to apply the formula:

To calculate the logarithm at base 5 of 25, you key in: 25 [log] [ ÷] 5 [log] [=]

Press 2nd [STAT] then select CLRDATA to clear statistics data. Select 1-VAR or 2-VAR for one-variable or two-variable statistics. Press DATA and enter your data (x for 1-VAR or x and y for 2-VAR). Press 2nd [EXIT-STAT] and select N. Press STAT-VAR to see a menu of statistics variables and their values. Sx (and Sy) will give you the standard deviation, sigma-x (and sigma-y) will give you the population standard deviation.

5 ^ (-) 2 =

The ^ key is above and to the left of the 7 key, the (-) key is just to the right of the decimal point key.

On the leftmost side of your calculator, press the 2nd button.

Then, press the x^2 button (above it there should be a square root symbol)

Finally, type in the number you want to find the square root of

Use the square-root function, which is the shifted function of the x^2 key just to the left of the 7 key.

For example, to find the square root of 2, press 2nd [square-root] 2 ) =

Use the xth-root function. It's the shifted function of the ^ key, above and left of the 7 key. For example, to calculate the cube root of 8, press 3 2nd [xth-root] 8 =

Square root is the 2nd function of the square key, to the left of the 7 key. To compute the square root of 62, press 2nd [square-root] 6 2 ) =

2nd [square-root] 3 3 . 1 ) =

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Whatever angle mode you're in, the calculator will display that. So, if you switch to radians, the DEG will disappear from the screen but the RAD will show up instead. That's just the way the calculator works.

Use [xth-root], the shifted function of the ^ key, above and to the left of the 7 key.

For example, to calculate the cube root of 8, press 3 2nd [xth-root] 8 =

Having gone over a month without a response to my query, I assume this is no longer a problem.

Use the xth-root function. It's the 2nd function of the ^ key, above and to the left of the 7 key.

For example, to find the cube root of 8, press 3 2nd [xth-root] 8 =

To calculate the log to any base, use the relation log_b(x) = log(x)/log(b) = ln(x)/ln(b).
You can use either LOG or LN, you'll get the same result (within roundoff error).

You can raise a number to any power by using the ^ key (above and left of the 7 key). For example, to find 5 cubed, press 5 ^ 3 =

It's marked (-) and is on the bottom row of the keyboard, to the right of the decimal point.

Here is the link to the TI Scientific calculator manuals page.

When in doubt, add more parenthesis

( (12!) / ((12-10)!) ) * (10!)