Question: This is a time series question. I have to answer this question using an R code. I have no idea how to get started, no

This is a time series question. I have to answer this

This is a time series question. I have to answer this question using an R code. I have no idea how to get started, no clue. Please, help!!! Thanks a lot.

formed series is Slal 1.9 A time series with a periodic component can be constructed from Xt-U sin(20t) + U2 cos(20t), where U1 and Up are independent random variables with zero means and E(U2 E( ) T2. The constant ao determines the period or time it takes the process make one complete cycle. Show that this series is weakly stationary with autoco ance function

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