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Math Help - Problem #5 Final Calculus I Exam Spring 2007

  1. #1
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    Problem #5 Final Calculus I Exam Spring 2007

    Re:
    Attached Thumbnails Attached Thumbnails Problem #5 Final Calculus I Exam Spring 2007-exam-question.jpg  
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  2. #2
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    Hello, qbkr21!

    Absolutely correct . . . good work!

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  3. #3
    Grand Panjandrum
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    Quote Originally Posted by qbkr21 View Post
    Re:
    What is going on in the attachment?

    You are differentiating:

    d^2 = 10x^2 + 14x + 7

    with respect to x, which should give:

    2d (d/dx)(d) = 20x^2 +14

    so if (d/dx)(d) = 0 as we need for a stationary point you have:

    20x^2 +14 = 0

    which is what you have, but how did you get there?

    RonL
    Attached Thumbnails Attached Thumbnails Problem #5 Final Calculus I Exam Spring 2007-gash.jpg  
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