# Double Polar integral

1. Nov 7, 2009

### tnutty

1. The problem statement, all variables and given/known data

Convert to polar integral and integrate.

$$\int_{D}\int xy dA$$

where D is the disk with the center origin and radius 3.

I am not sure about the limits. I know that x = rcos($$\theta$$), y = rsin($$\theta$$), dA = rdr*d$$\theta$$
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Nov 7, 2009

### tnutty

Solved, thanks

3. Nov 7, 2009

no worries