Exam Questions Paper - ECE Questions and Answers

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The signal y(t) = x(- t) is __________ .

causal

non-causal

depends on x(t)

none of these

Answer : Option C

Explanation :

For signal x(- t) to be causal, the original signal x(t) has to be anticausal.

Similarly for signal x(- t) to be non causal, the original signal x(t) has to be causal.

Hence response of x(t) depends solely on x(t) only.

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