"Marcio Barbalho" <email@example.com> wrote in message <firstname.lastname@example.org>... > Apparent the result of the original double integration is 53.22. I would like to prove it. - - - - - - - - - Marcio, I got around to applying those techniques I have described to you earlier in this thread and arrived at a somewhat higher value than the 53.22 you quoted. My answer was 53.573533745 . How did you arrive at your value?
As I stated, there is a closed form for the inner integral using polar coordinates, and the outer integral was done numerically using one of matlab's quadrature routines with the inner integral formula as an integrand.