Let f = hy + e √ x , 2x + cos(y 2 )i. compute the following using green’s theorem. (a) r c f · dr where c is the positively oriented curve enclosed by the parabolas y = x 2 and x = y 2 . (b) set up but do not evaluate what green’s theorem gives for r c (f · n) ds where n is the vector normal to the curve.