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Electronics and Communication Engineering - Signals and Systems - Discussion

Discussion Forum : Signals and Systems - Section 6 (Q.No. 39)
Signals and Systems
39.
Which one of the systems described by the following I/P - O/P relations is time invariant
y(n) = n x(n)
y(n) = x(n) - x(n - 1)
y(n) = x(- n)
y(n) = x(n) cos 2pf0n
Answer: Option
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