Page 63 - Schaum's Outline of Theory and Problems of Signals and Systems
P. 63
SIGNALS AND SYSTEMS [CHAP. 1
(4
Fig. 1-41
1.47. Express the sequences shown in Fig. 1-42 in terms of unit step functions.
Am. (a) x[nl=u[n]-u[n -(N + I)]
(b) x[n]= -u[-n - 11
(c) x[nl = u[n + 21 - u[n - 41
(4
Fig. 1-42
