In vector calculus, Green's theorem relates a line integral around a simple closed curve C to a double integral over the plane region D bounded by C. It is the two-dimensional special case of Stokes' theorem. That is, N (Mdx + Ndy) = ff SS CON Jc aMdA. y Evaluate the line integral fxdx + xydxwhere C is the triangle with vertices at (0, 0), (0, 5/8) and (5/8,0) with positive orientation.