Problem 2. The stream function for a two-dimensional flow is given by the expression = x²+2y. (a) Calculate the velocity components and vorticity at the point (1,0). (b) What is the magnitude and direction of the velocity at the point (1,1)? Problem 3. Let us assume that the velocity components for a flow are: u=x²+y, v=0. Compute the circulation - V.ds over the closed curve ABCD. D ABCD A 2 C B tx