Question

z transform of (n cos n theta)​

Answer 1

Properties of ROC of Z-Transforms

• If x(n) is a finite duration anti-causal sequence or left sided sequence, then the ROC is entire z-plane except at z = ∞. If x(n) is a infinite duration causal sequence, ROC is exterior of the circle with radius a. i.e. |z| > a.

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Answer 2

Step-by-step explanation:

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