1. ## Integration problem

hi...i am stucked at integrate this term:

$
\int{\int{x^py^q\sqrt{x^2+y^2}\:dx}\:dy}
$

wher p and q are constant.

anybody can help me on this? Thanks

2. Have you tried in polar coordinates? it becomes

$\int \int r^{p+q+2}\cos^p\theta \sin^q\theta \ dr\ d\theta$

(I haven't tried, but it looks a bit easier. Just suggesting.)

3. no bounds, this makes no sense by not having them.

4. sorry..forgot to put the boundary. the boundaries for x and y is -1 to 1.
thanks