"Marcio Barbalho" <firstname.lastname@example.org> wrote in message news:email@example.com... > "Roger Stafford" wrote >> - - - - - - - - - >> 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? >> >> Roger Stafford > > I have abso-bloody-lutely nothing against numerial integration. In > actuality, I love numerical methods, of course, that does not mean I am an > expert. I am just a junior engineer who loves maths and eventually find it > interesting to play with calculus on rainy weekends. > > Alright... my question is... how do I solve the inner integral numerically > if the upper limit is not a number but an expression?