A basic method to take cube root of 9:
* take log(9)
* divide by 3
* take antilog
A scientific calculator has a button to calculate X to the Y power. The cube root of 9= (9)^1/3 power.
Or a button to calculate #Xth root of Y.
They should implement
crt(x) cube root
qrt(x) quad root
currently only sqrt(x) is implemented.
qrt(x) quad root
The nth root of a number x can be found by x^(1/n). If you have the x-power-time button, then you use it.
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It has already been implemented. But it's dynamic, so you can select the power you wish yourself. That is what has been done with the x^y function.