Recent content by Rafa Ariza

  1. R

    Is there any way to calculate this integral?

    it was awesome, really love maths
  2. R

    Is there any way to calculate this integral?

    YESSSS DONE!!! THANKS MEN AWESOME
  3. R

    Is there any way to calculate this integral?

    ##\displaystyle{\int_0^R {r³\over \sqrt{R²-r²}\,}\int_0^{\pi\over 2}{\sin \phi\cos \phi}\ dr\;d\phi}## ???
  4. R

    Is there any way to calculate this integral?

    $$R\iint {xy\over \sqrt{R^2-(x^2+y^2)\,}} \ dx dy=\int {r³\over \sqrt {R²-r²\,}} \ dr...$$
  5. R

    Is there any way to calculate this integral?

    this way of solve it is so difficult
  6. R

    Is there any way to calculate this integral?

    but ##x²+y²=R²## so ##z= \sqrt{R^2 - (x^2+y^2)\,}=0##
  7. R

    Is there any way to calculate this integral?

    my problem is to resolve it with surface in this form: G(x,y,z)=x^2+y^2+z^2-R^2=0 the theory is or equivalent or the real problem is in the f(x,y,z(x,y)) or the other equivalent
  8. R

    Is there any way to calculate this integral?

    yes i am interested. here is the resolution by put the sphere in parametric form r(u,v)
  9. R

    Is there any way to calculate this integral?

    Rxy is the projection of S in the plane xy.
  10. R

    Is there any way to calculate this integral?

    here is my problem but in the other form is resolved yet
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