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Which one of the systems described by the following I/P - O/P relations is time invariant | |
A. | y(n) = n x(n) [Wrong Answer] |
B. | y(n) = x(n) - x(n - 1) [Correct Answer] |
C. | y(n) = x(- n) [Wrong Answer] |
D. | y(n) = x(n) cos 2pf0n [Wrong Answer] |
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