1. The problem statement, all variables and given/known data I have a long integration, for finding the flux integral. One of the variables, when multiplied out turned into a function multiplied by a sqrt. I can integrate the rest of the question, just not this bit. The integrals are both between 0 and 3 2. Relevant equations integral (4st^3)*sqrt(9-(s^2)-(t^2)) dsdt 3. The attempt at a solution I tried partial differentiation, but got rather lost and ended with a ridiculous answer.