Check periodicity: x(n)=sin(4n)
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter19: Capacitors
Section: Chapter Questions
Problem 15RQ: A postage stamp capacitor has the following color marks starting at the upper-left dot: black,...
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Question
Check periodicity:
x(n)=sin(4n)
Expert Solution
Step 1
In this case, the periodicity of the signal is to be checked.
Step 2
The general expression of a discrete-time sine wave is given as
For a given discrete-time signal to be periodic, the ratio must be rational.
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