HELP!! Setting up triple integral in spherical coordinate 1. The problem statement, all variables and given/known data http://img517.imageshack.us/img517/9139/83291277.jpg [Broken] 2. Relevant equations I set up the bound for this problem as following: r=0..2/cos(phi), phi=pi/2..3pi/4, theta=0..2pi, but maple always return an error in calculating such integral. I've included the Jcobian transformation in the integral, and convert x^2+y^2 to rho^2 sin(phi). I found that the problem was due to the denominator cos(phi) become zero at the lower bound. But the volume representing the respective volume integral makes sense, so how to correct for this? Am I setting up the integral wrong? second problem: http://img695.imageshack.us/img695/3585/38264414.jpg [Broken] The same thing happens, please help! Thank you!