how can I calculate this root?

[blankk]

I guess it is more of a mathematical issue..
give me your lights :)

http://img.photobucket.com/albums/v415/techblank/root.jpg

[mcleano]

It would help if you post the code that you've already got. If you haven't got any, look up all the functiuons in the <cmath> header.

Heres a start... http://www.cplusplus.com/reference/clibrary/cmath/sqrt.html

[Bazzy]

∛x is the same as x^⅓

[blankk]

cheers Bazzy.
Thats how it can be done I think.