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3.4- Let Y1 = θ0 + ε1 and then for t > 1 define Yt recursively...

3.4- Let Y1 = θ0 + ε1 and then for t > 1 define Yt recursively by Yt = θ0 + Yt−1 + εt. Here θ0 is a constant. The process {Yt} is called a random walk with drift.

(c) Find the autocovariance function for {Yt}.

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