description:g=power(f, n) is called for the syntax 'f.^n' and computes the n-th power of the each element in a matrix of NC polynomials. arguments:f is a matrix of NCpolys n is a nonnegative integer output:matrix of NCpolys possible usage:f.^n, power(f, n) example:>> [x+y x-y].^2 ans = x^2+x*y+y*x+y^2 x^2-x*y-y*x+y^2 |