Suppose a random process is X(t) = A[cos(2fot + T)] where A and Fo are constants and T is a random variable that is uniformly distributed over [0, 2p].
1. Is X(t) wide-sense stationary?
2. Find power spectral density of x(t).
3. Let Y(t) = X (t) - X (t - T) , find the power spectral density of Y(t)