What is the ROC of the signal x(n)=δ(n-k),k>0?
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 the signal x(n)=δ(n-k),k>0?
A. z=0 B. z=∞ C. Entire z-plane, except at z=0 D. Entire z-plane, except at z=∞
Explanation: We know that, the z-transform of a signal x(n) is Given x(n)= δ(n-k)=1 at n=k