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Math Help - Double integrals problem - help appreciated

  1. #1
    Member zzizi's Avatar
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    Double integrals problem

    Hi, please look at the following problem:

    \iint_{D} 5xydydx

    I was asked to evaluate the above by considering the following:

    D is the region enclosed by the triangle with vertices (1,1), (2,2) and (3,0)


    I would appreciate any help in tackling this problem - many thanks in advance
    Last edited by zzizi; December 2nd 2012 at 09:45 AM.
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  2. #2
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    Re: Double integrals problem

    What have you done?

    A sketch would be a good start.
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  3. #3
    Member zzizi's Avatar
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    Re: Double integrals problem - help appreciated

    Yes, I sketched and found out that I need to add two separate integrals.
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  4. #4
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    Re: Double integrals problem - help appreciated

    Good. Do you know the equations of the lines that form the triangle?
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