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Math Help - Rate of Change

  1. #1
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    Rate of Change

    Hey, I'm doing some homework and I didn't understand this problem. It's a little confusing.

    Find  x_0 given that the rate of change of  y=2(x^2) + x -1 with respect to x at x=  x_0 is 4

    The first thing I did was integrate the function. But I'm not sure what to do next.
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  2. #2
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by discobob View Post
    Hey, I'm doing some homework and I didn't understand this problem. It's a little confusing.

    Find  x_0 given that the rate of change of  y=2(x^2) + x -1 with respect to x at x=  x_0 is 4

    The first thing I did was integrate the function. But I'm not sure what to do next.
    They have told you (a bit ambiguously I might add) that y'=4 at x=x_0. So find x_0
    Last edited by VonNemo19; February 5th 2010 at 02:20 PM.
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  3. #3
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    wow, that's it? It was written a bit confusingly. Thank you very much for the help.
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  4. #4
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by discobob View Post
    wow, that's it? It was written a bit confusingly. Thank you very much for the help.
    So, what do you have for x_0?
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