# Compute y' and y"?

Given that y=sigma of n=0, infinity of nx^n, compute y' and y" and write out the first four terms of each series as well as the coefficient of x^n in the general term. Answer: y'=1+22x+32x2+42x3+…+(n+1)2xn+… y"=2^2+3^2*2x+4^2*3x^2+5^2*4x^3+…+(n+2)^2*(n+1)xn+… Please...