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Math Help - Help please with this derivative

  1. #1
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    Help please with this derivative

    Y'=-x^2 +2 /(x^2 + 2)^2

    need 2nd derivative for concavity

    I need it for roots so i only need the top(numerator) i get to a certain point but cant seem to factor it... ughh

    please help
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  2. #2
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    Quote Originally Posted by Calculus23 View Post
    Y'=-x^2 +2 /(x^2 + 2)^2

    need 2nd derivative for concavity

    I need it for roots so i only need the top(numerator) i get to a certain point but cant seem to factor it... ughh

    please help
    what is the original function, y ?
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