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Thread: HELP! Calculus Derivative Problem.

  1. #1

    HELP! Calculus Derivative Problem.

    I started working on a calculus derivative problem today, and got a really crazy answer as a result. I've scanned the problem with my work below. Did I do this correctly? If not, where did I go wrong? Thanks. ^.^
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  2. #2
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    Quote Originally Posted by HWilliams44 View Post
    I started working on a calculus derivative problem today, and got a really crazy answer as a result. I've scanned the problem with my work below. Did I do this correctly? If not, where did I go wrong? Thanks. ^.^
    Your second derivative is correct, but all the problem was asking for was the value of the second derivative at x = 2, which you found to be 16e^4 + 2e^2. Done!
    "There are 10 types of people in this world - those who understand binary and those who don't."

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    Quote Originally Posted by HWilliams44 View Post
    I started working on a calculus derivative problem today, and got a really crazy answer as a result. I've scanned the problem with my work below. Did I do this correctly? If not, where did I go wrong? Thanks. ^.^
    There is a typo in the last line of the left side: the final e^x should be e^(x^2).

    [tex]\displaystyle y''(x) = (4x^2 + 2)\ e^{x^2} [/tex]

    [tex]\displaystyle y''(2) = 18\ e^4 =\ ... [/tex]
    DrPhil (not the TV guy)
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  4. #4
    Thank you all so much!!! You guys are lifesavers!

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