Let {X(t), tЄR} be a continuous-time random process, defined as X(t) = A cos (2t+), where A ~ U(0, 1) and ~ U(0, 2) are two independent random variables. (a) Find the mean function μx(t). (b) Find the correlation function Rx (t1, t2). (c) Is X(t) a WSS process?