Can someone help me do this one?​

I understand that the Rw(Tao) is the v(t).v*(t-Tao) then do the average over time goes to infinity​

Do I keep the cosine form or change into complex phasor form, and also how do I compute the conjugate?​

Cheers

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You don't need to write in phasor form. When you multiplied the cosines, you will see the famous expression: cos(a)*cos(b)=1/2*(cos(a+b)+cos(a-b)) will handle it. If I'm wrong, forgive me but I think you need the distribuiton of it. In that case, how would you know the expected value?

Best Regards,

Emre