Sep 12, 2012 #1 W_Heisenberg Full Member level 4 Joined Feb 27, 2011 Messages 217 Helped 6 Reputation 12 Reaction score 6 Trophy points 1,298 Location Boston Activity points 2,575 is it possible to get simplification? if x[n]=(3/5)^n*u[n] h[n]=cos(pi/2*n+pi/4) what is y[n]? Last edited: Sep 12, 2012