What is the ROC of the signal x(n)=‚âà√≠¬¨‚Ä¢(n-k),k>0?$

1.	What is the ROC of the signal x(n)=‚âà√≠¬¨‚Ä¢(n-k),k>0?$
A.	z=0
B.	z=‚Äö√Ñ√∂‚àö‚Ä†‚àö¬™
C.	Entire z-plane, except at z=0
D.	Entire z-plane, except at z=‚Äö√Ñ√∂‚àö‚Ä†‚àö¬™
Answer» D. Entire z-plane, except at z=‚Äö√Ñ√∂‚àö‚Ä†‚àö¬™

Discussion