Please see the attached file for the full problem.
W[n] = 2u[n] - 4u[n-2] + 2u[n-4],
v[n] = sin[2πn/4]u[n]
Calculate the exact answer by convolution w[n]*v[n]© BrainMass Inc. brainmass.com March 21, 2019, 12:26 pm ad1c9bdddf
This solution calculates convolution.