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Math Help - Find u in terms of x from a given DE

  1. #1
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    Find u in terms of x from a given DE

    Could someone help with the following question:

    Find u in terms of x from a given DE-screen-shot-2010-06-28-20.12.45.png

    It's in a very different style to what I'm used to. i can see that I need to use the product rule on the right hand side but I'm not sure how to..

    Thanks
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  2. #2
    A Plied Mathematician
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    This is actually a differential equation, and you're going to need to integrate to find the final answer. The equation given is not, in general, true. But the problem is obviously assuming it is true. So, what I would do first is expand the LHS by using the product rule, and then solve for du/dx. See what happens.
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  3. #3
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    Quote Originally Posted by Ackbeet View Post
    This is actually a differential equation, and you're going to need to integrate to find the final answer. The equation given is not, in general, true. But the problem is obviously assuming it is true. So, what I would do first is expand the LHS by using the product rule, and then solve for du/dx. See what happens.
    Thanks, I just figured it out =)
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  4. #4
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    Excellent!
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