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Math Help - Double Integral Question

  1. #1
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    Double Integral Question

    How do I show:
    (see attachment)

    by changing the order of integration?

    Thanks
    Attached Thumbnails Attached Thumbnails Double Integral Question-maths.png  
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  2. #2
    Math Engineering Student
    Krizalid's Avatar
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    \int_{0}^{a}{\int_{0}^{x}{f(y)\,dy}\,dx}=\int_{0}^  {a}{\int_{y}^{a}{f(y)\,dx}\,dy}, and we're done.
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