How can you take any root above the 3rd on this calculator?

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 =

(1/2.5 x 10^6)^)(1/3)=0.07368

See captured images

To find the 3rd root of the number in display, use the sequence
.

In the MATH MISC menu you'll find the xth-root function. Use this to find the 3rd root.

3 xth-root 8 ENTER will give 2.

You can calculate any root by raising to the reciprocal. For example, to calculate the cube root of 125, press 1 2 5 y^x 3 1/x =

To calculate the fourth root of 16, press 1 6 y^x 4 1/x =

The y^x key is just above the 9 key. The 1/x key is just above that.

You can calculate cube roots by using the cube root function (the 2nd-shift of the 0 key). You can calculate arbitrary roots by using the x-root function (the 2nd-shift of the y^x key, just above the divide key).

You can calculate the cube root by raising to the one-third power. For example, to calculate the cube root of 125, press 1 2 5 y^x 3 1/x =

The y^x key is just above the 9 key. The 1/x key is just above that.

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.

Hello,
There is a relation between roots and fractionary powers.

2nd root (square root) of X = X^(1/2) power 1/2
3rd root (cubic root) of X = X^(1/3) power 1/3
4th root of X = X^(1/4)
...
n-th root of X = X^(1/n)

Use the raise to arbitrary power key labeled as a caret [^] or [X to the y] or [Y to the x]
Hope it helps.

http://answers.yahoo.com/question/index?qid=20071129202945AAOndt7

You can multiply a number by 1/3rd to get the cube root or

Under the MATH button, the fourth option down will give you cube root. Any n root beyond that will require the x^(1/n) method.