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4.2 Given a sequence x(n) for 0 ≤ n ≤ 3, where x(0) = 4, x(1)...

4.2 Given a sequence x(n) for 0 ≤ n ≤ 3, where x(0) = 4, x(1) = 3, x(2) = 2, and x(3) = 1, evaluate its DFT X(k).

4.5 Given the DFT sequence X(k) for 0 ≤ k ≤ 3 obtained in Problem 4.2, evaluate its inverse DFT x(n).

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