(c) The autocorrelation function (, ) of () is the expected value of ()(). Since is a uniform random variable, its square's expected value is 1/3. Therefore: (, ) = E[()()] = E[4^2 cos cos ] = 4E[^2] cos cos = 4*1/3*cos cos = 4/3 cos cos ...how is this can u please explain it in simple and give analogy to understand