description:h=plus(f, g) is called for the syntax 'f + g' and means symbolic addition. arguments:f and g are NCpolys representing polynomials or matrix of NCpolys with matching dimensions output:NCpoly representing the polynomial f + g possible usage:f + g, plus(f, g) example:>> f=[x^2-2*x*y,1-x];g=[x*y,x]; >> f+g ans = x^2-x*y 1 |