1. The problem statement, all variables and given/known data Finding the double integral of the following [tex]\int\int xy / (x^2+y^2+1)^1/2 dA[/tex] R = [(x,y): 0<=x<=1, 0<=y<=1] 2. Relevant equations None 3. The attempt at a solution ok I am having trouble integrating when I see the the quotient. what I have done is, [tex]\int\int xy(x^2+y^2+1)^-1/2 dy dx[/tex] I can't remember the step taken to ingrate this. I would add one to the exponent making it, (2)xy(x^2+y^2+1)^1/2 <---but I am missing something else. I would need to integrate each y right? so that would be [tex]\int x(x^2+ (1/3)y^3 +1 ) ^1/2 dx[/tex] and then I proceed integrating it again, this time for x... ???