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The input and output of a continuous time system are respectively denoted by x(t) and y(t) Which of the following descriptions corresponds to a causal system? | |
A. | y(t) = x(t - 2) + x(t + 4) [Wrong Answer] |
B. | y(t) = x(t - 4) + x(t + 1) [Wrong Answer] |
C. | y(t) = x(t + 4) + x(t - 1) [Correct Answer] |
D. | y(t) = x(t + 5) + x(t + 5) [Wrong Answer] |
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