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Discussion :: Signals and Systems

  1. A system is said to be casual if the output of the system depends on the
    2. A.
    Past & Present Inputs
    B.
    Present Input
    C.
    Future Input
    D.
    Past & Future Inputs

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    Answer : Option A

    Explanation :

    A system is causal if (and only if) the current output is only a function of present and past inputs. The current output does not depend on future inputs y(k) = f(u(k); u(k - 1); u(k - 2); : : :)

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