Gate EE-2015-1 Question Paper With Solutions
Q.36.Consider a discrete time signal given by
The region of convergence of its Z-transform would be
(A) the region inside the circle of radius 0.5 and centered at origin.
(B) the region outside the circle of radius 0.25 and centered at origin.
(C) the annular region between the two circles, both centered at origin and having
radii 0.25 and 0.5.
(D)the entire z-plane.
Answer:(C)
Explanation: