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Math Help - Second Derivative

  1. #1
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    Second Derivative

    Ok, I can't get the right answer of 96e^{4x^4}x^2(16x^4+3)

    Here is my work

    f(x)=6e^{4x^4}

    f'(x)=6e^{4x^4}(16x)

    =96xe^{4x^4}

    f''(x)=96xe^{4x^4}(16x)+e^{4x^4}(96)

    =1536x^2e^{4x^4}+96e^{4x^4}

    Where am I going wrong??
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  2. #2
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    the derivative of 4x^4 is 16x^3, not 16x
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  3. #3
    Member Mentia's Avatar
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    in your first deriviative it should be (16*x^3) instead of (16*x)
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