Page 178 - Schaum's Outline of Theory and Problems of Signals and Systems
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CHAP. 41 THE z-TRANSFORM AND DISCRETE-TIME LTI SYSTEMS
Unit circle
t 1
-I ca<O a<-I
Fig.4-1 ROCofthe form lzl>lal.
EXAMPLE 4.2. Consider the sequence
x[n] = -anu[-n - 11
Its z-transform X(z) is given by (Prob. 4.1)
