Recent content by sadris

  1. S

    Solve Double Integration: \int\frac{x^2-y^2}{(x^2+y^2)^2}dx

    Yea I tried that but you end up with x^2 - y^2 = A(x^2 + Y^2) + B(x^2 + Y^2) And when you set x^2 = -y^2 you would end up with -2y^2 =0 which really isn't a helpful expression :(
  2. S

    Solve Double Integration: \int\frac{x^2-y^2}{(x^2+y^2)^2}dx

    \int \frac{x^2 - y^2}{(x^2 + y^2)^2} dx Above is an integration involved in a double integration, I know the answers via TI-89, but I am trying to find out how to get them :frown: I have tried trig substitution, u sub, integration by parts, etc. etc. And I am out of ideas. Can anyone please...
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