What is the ROC of z-transform of finite duration anti-causal sequence?
A. z=0
B. z=∞
C. Entire z-plane, except at z=0
D. Entire z-plane, except at z=∞
Answer:A
What is the ROC of z-transform of finite duration anti-causal sequence?
A. z=0 B. z=∞ C. Entire z-plane, except at z=0 D. Entire z-plane, except at z=∞
Explanation: Let us an example of anti causal sequence whose z-transform will be in the form X(z)=1+z+z2 which has a finite value at all values of ‘z’ except at z=∞.So, ROC of an anti-causal sequence is entire z-plane except at z=∞.