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25-09-2021 Signals & Systems

Q. y(t) = x(t-2) + x(2-t). Comment on its causality:

A. Causal
B. Time variant
C. Non causal
D. All of the above

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Dapzoi Verified
Commented on 2021-09-25 13:09:50 (IST)
Answer: C

Explanation: For a time instant existing between 0 and 1, it would depend on the input at a time in the future as well, hence being non causal.