"Marcio Barbalho" <firstname.lastname@example.org> wrote in message <email@example.com>... > I've been trying with both Mupad and Maple... it just doesn't work. Of course I may be missing some tricks. > Apparent the result of the original double integration is 53.22. I would like to prove it. > > Thank you - - - - - - - - - It is my guess that you will never find a double integral solution to this particular problem of yours unless you do things numerically at some stage. I also doubt that Mupad or Maple will try experimenting with a polar coordinate change that could simplify the inner integral. What have you got against numerical methods, Marcio?