Question: a. X+ = 0.5X7-1 -0.20 Xt-2 + et = t- - b. X+ = ut + 0.5ut-1 -0.2ut-2 Ut = Calculate the first three lags

a. X+ = 0.5X7-1 -0.20 Xt-2 + et = t- - b. X+ = ut + 0.5ut-1 -0.2ut-2 Ut =

Calculate the first three lags of the theoretical ACFs implied by the following processes:

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