cube root

you have to write "sqrt(" in front of your term, for example [input]sqrt(4)[/input]
if you want to write the 3rd, 4th, 5th, ...root of a term, you have to write "sqrt(16, 4)" (the result is 2) [input]sqrt(16 ,4)[/input]

I hope I could help you.

I was wondering this too. Thanks.