Please note that the recommended version of Scilab is 6.0.0. This page might be outdated.
See the recommended documentation of this function
nthroot (Matlab function)
Real nth root of real numbers
If n is a scalar, Scilab "nthroot" is equivalent to Matlab "nthroot".
If n is not a scalar, Scilab "nthroot" calculates the elementwise real nth root. x and n must be the same size. Matlab "nthroot" does not.