What is causal Systems?

Q.  Causal systems are the systems in which
- Published on 27 Nov 15

a. The output of the system depends on the present and the past inputs
b. The output of the system depends only on the present inputs
c. The output of the system depends only on the past inputs
d. The output of the system depends on the present input as well as the previous outputs

ANSWER: The output of the system depends on the present and the past inputs

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