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Electronics and Communication Engineering - Signals and Systems - Discussion

Discussion Forum : Signals and Systems - Section 1 (Q.No. 46)
Signals and Systems
46.
Which one is a causal system?
y(n) = 3x[n] - 2x[n - 1]
y(n) = 3x[n] + 2x[n + 1]
y(n) = 3x[n + 1] + 2x[n - 1]
y(n) = 3x[n + 1] 2x[n - 1] + x[n]
Answer: Option
Explanation:

For causal output must depend upon Present and past not on future.

Discussion:
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