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    Differential Calculus
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    The function
    Question

    The function

    A.

    Increasing in (0, ∞) and decreasing in (-∞, 0)

    B.

    Decreasing in (0, ∞) and increasing in (-∞, 0)

    C.

    Decreasing in (-∞, -1]∪[1, ∞) and increasing in (-1, 1)

    D.

    Increasing in (-∞, -1]∪[1, ∞) and decreasing in (-1, 1)

    Correct option is D

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