Hi guys, as the title suggests I am a lizzle puzzled here.
The exercise asks me to prove that the variance of a cosine function is 1/2 and that also requires calculating the expected value.
I think I am getting the limits of integration wrong. What I am trying is [0,2π]. Any help is greatly appreciated, thanks!
The exercise asks me to prove that the variance of a cosine function is 1/2 and that also requires calculating the expected value.
I think I am getting the limits of integration wrong. What I am trying is [0,2π]. Any help is greatly appreciated, thanks!