I need to take nth (8,5,4,etc) root on the TI30XA

use the x ^1/y key. It's the shift of x^y key. So the 3rd root of 8 is found by entering 8 then shift then x^y then 3 then =

There are several ways to find the cube root of a number on a calculator. On this calculator, we can use the nth root button, by using the yellow shift button with the ^ key. Another way to do this is just to use the ^ key.

For example, the cube root of 8 is performed by the following key sequence: 8, shift, ^, 3.

Another sequence is: 8 ^ (1/3)

Good luck.

Paul

The nth-root function is the right-shifted function of the square-root key, second column from the left, fifth row from the top.

In RPL mode, to calculate the third root of eight, press 8 ENTER 3 right-shift [nth-root] and get 2.

In algebraic mode, press right-shift [nth-root] 3 right-shift [,] 8 ENTER and get 2. (The comma is the right-shifted function of the SPC key on the bottom row.)

Square root of 39: Press 3 9 [square-root] =
[square-root] is the key just to the left of the divide key.

Cube root of 9482: Press 9 4 8 2 2nd [cube-root] =
[cube-root] is the shifted function of the 0 key.

For other roots, you can use the [nth-root] function, the shifted function of the key above the divide key. For example, to calculate the fourth root of 16, press 1 6 2nd [nth-root] 4 =

A power is just repeated multiplication, so without a calculator you can work the answer out longhand. (If you were trying to do the nth ROOT of a number that would be much harder!)

Any number N to the power P, then, is N multiplied by itself P times:

3^3 = 3x3x3
12^8 = 12x12x12x12x12x12x12x12x12x12x12x12

and so on.

Press the MATH key to bring up the Math menu. Option 3 gives you cubed, option 4 gives you cube root, option 5 gives you nth root.

For example, 3rd root of 8: MATH 4 8 ENTER gives 2.

4th root of 16: 4 MATH 5 16 ENTER gives 2.

The structure of a number in scientific notation is as follows
one digit [decimal mark] several digits power of 10 (- sign if needed) up to two digits for the exponent.
d.ddddd [10^] (-) dd

To enter a number in scientific notation you need to use the [EXP] key, between the [.] and the [=] sign, on the bottom row of keys.

Ex: Avogadro's number (do not worry if you do not know what it represents)
Na= 6.02 x10 ^23
6.02 [EXP] 23 [=]

Electron charge 1.6 x10 ^(-19)
1.6 [EXP] [+/-] 19 [=]
The [+/-] key is the change sign key, in the first column of keys, between the fraction key [a b/c] and the [7] key

Use the ^ then (power/root). So the cubed root of 5 squared is 5^(2/3)=2.92402.

Hello,
If there is no special key reserved for that operation, you can use the raise to an arbitrary power key. This key is represented as [^] ( a caret or accent circonflexe) or [X to the y] or [Y to the x ]. I have just verified : it is primary key accessible directly.
If you want the cube of a number; 2 [^]3 =2x2x2=8.
In your algebra course they must have taught you that the roots of a number (square, cube, fourth, fifth, nth) are equivalents to raising that number to a fractionary power (a power whose exponent is a fraction of the form 1/2 ,1/3, 1/4, 1/5, 1/n etc.)

27[^] (1/3) = cube root of 23 = 3
Hope it helps.

can't quite make out the detail on buttons on the image I have of your calculator but here goes.

say for example, the geometric mean of 2 × 3 × 6 × 8 is the 4th root of 288, or approximately 4.12.

enter nth root first, in this case 4 then shift then root symbol then open bracket, 2x3x6x8, close bracket then = ,
should give you 4.1195 etc