Page 31 - Schaum's Outline of Theory and Problems of Signals and Systems

SIGNALS AND SYSTEMS [CHAP. 1

(a) x(r - 2) is sketched in Fig. 1-18(a).
(6) x(20 is sketched in Fig. 1-18(b).
(c) x(t/2) is sketched in Fig. 1-18(c).
(d) X( -t) is sketched in Fig. 1-1Nd).

(c)
Fig. 1-18

1.2. A discrete-time signal x[n] is shown in Fig. 1-19. Sketch and label each of the
following signals.
(a) x[n - 21; (b) x[2n]; (c) x[-n]; (d) x[-n + 21

Fig. 1-19