(This problem is a reproduction of the textbook Problem 1.22. (a), (d), (g), (h).) A discrete-time signal is shown in Figure P1.22. Sketch and label carefully each of the following signals.:

(i) x[n - 4]

(ii) x[3n + 1]

(iⅲ) 호리미 + 호 (-1)"a[n]

(iv) x[(n - 1)2²]