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Math Help - differentiation

  1. #1
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    differentiation

    Suppose that f is an odd function; i.e., f(-x)=-f(x) for all x. Suppose that f'(x) exists. Which of the following must necessarily be equal to f'(-x)?

    A) f'(x)
    B) -f'(x)
    C) 1/(f'(x))
    D) -1/(f'(x))
    E) None of the above

    i know the answer is A), but I don't know how to solve it. please help!
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  2. #2
    MHF Contributor Mathstud28's Avatar
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    if a function is odd

    its derivative is even so since the function was odd its derivative is even so f'(-x)=f'(x)
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