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Discussion :: Signals and Systems

  1. If a function has only cosine terms, it must satisfy the equation

    2. A.
    f(t) = -f(t)
    B.
    f(-t) = f(t)
    C.
    f(-t) = -f(t)
    D.
    none of the above

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    Answer : Option B

    Explanation :

    cos (- θ) = cos θ.

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