Problem

Let x[n] denote a causal sequence (i.e., if x[n] = 0, n < 0) for which x[0] is nonzer...

Let x[n] denote a causal sequence (i.e., if x[n] = 0, n < 0) for which x[0] is nonzero and finite.

(a) Using the initial-value theorem, show that there are no poles or zeros of X(z) at z = ∞.

(b) Show that, as a consequence of your result in part (a), the number of poles of X(z) in the finite z-plane equals the number of zeros of X(z) in the finite z-plane. (The finite z-plane excludes z = ∞.)

Step-by-Step Solution

Request Professional Solution

Request Solution!

We need at least 10 more requests to produce the solution.

0 / 10 have requested this problem solution

The more requests, the faster the answer.

Request! (Login Required)


All students who have requested the solution will be notified once they are available.
Add your Solution
Textbook Solutions and Answers Search