12 A random process has sample functions of the form xr(t)= A cos (@ t+ 0) in which A and o are constants and 0 is a random variable. (i) Prove that this process is stationary in the wide sense ife is...

Extracted text: 12 A random process has sample functions of the form xr(t)= A cos (@ t+ 0) in which A and o are constants and 0 is a random variable. (i) Prove that this process is stationary in the wide sense ife is uniformly distributed between 0 and 2n.