1. (15 points) A discrete-time signal x[n] is sketched below. Sketch and label carefully each of the following signals: x[n] (a) x[n— 2]; (b) x[2 — n]; (c) x[2n]; (d) x[−1 – 2n]; (e) xev [n] (the even part of x[n]) 0.5 -3-2 1 0.5 ** -1 0 1 2 34 n -0.5 −1