If the ROC of X(z) is r1<|z|<r2, then what is the ROC of X(a-1z)?
A. |a|r1<|z|<|a|r2
B. |a|r1>|z|>|a|r2
C. |a|r1<|z|>|a|r2
D. |a|r1>|z|<|a|r2
Answer:A
If the ROC of X(z) is r1<|z|<r2, then what is the ROC of X(a-1z)?
A. |a|r1<|z|<|a|r2 B. |a|r1>|z|>|a|r2 C. |a|r1<|z|>|a|r2 D. |a|r1>|z|<|a|r2
Explanation: Given ROC of X(z) is r1<|z|<r2