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Double and triple integrals

  1. Apr 13, 2005 #1
    I understand double and triple integrals and all, but I'm just wondering why is
    [tex]dxdy=|J|dudv\ x=f(u,v)\ y=g(u,v)[/tex] Where does that derive from? Why is it? (and also for triple integrals)
     
    Last edited: Apr 13, 2005
  2. jcsd
  3. Apr 13, 2005 #2

    matt grime

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    It comes from considering the area change of an infinitesimal area moving from the xy plane to uv plane
     
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