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  1. If x[n] = cos then the sequence x[n] is

    2. A.
    non-periodic
    B.
    periodic
    C.
    depends on n
    D.
    none of these

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    Answer : Option A

    Explanation :

    Consider cos= cos= cos

    Number of samples per period = 16p

    This is not a rational number. Hence signal is non periodic.

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