1. The problem statement, all variables and given/known data Use Green's theorem to find the integral ∫C (y^2dx+xdy) when C is the following curve (taken counterclockwise): the ellipse x^2/a^2 + y^2/b^2 =1. 2. Relevant equations Green's theorem: ∫C Mdx+Ndy = ∫∫R (∂N/∂x-∂M/∂y)dA 3. The attempt at a solution I tried parametrizing the ellipse as r(t)=(acost,bsint), but didn't know how to go on... I don't know how to solve the double integral over the ellipse ∫∫R (1-2y)dA. Thanks.