Problem 9 (stream function, lift and drag, Haberman 2.5.21-24) Consider y : R2\\ B, (0) - R by (x,y) = -alva' +y' - y 1- x2+ y- where B, (0) = {(x,y) ( R2 : x3 + y? 1 1=0, r+y' =1. (b) Set v = (by, -12) and use Bernoulli's law P = Po - P 2 for the pressure P to express the force vector exerted by the pressure on du = OB, (0) where u = R2\\B, (0) as a flux integral over Ou. (c) Calculate the horizontal force (drag) and the vertical force (lift) from your integral expression in part (b)