The stream function for a two-dimensional, non-viscous, incompressible flow field is given by Eq. 5. y (x, y) (m/s) = -x + 2y a) Does Eq. 5 satisfy the continuity equation? b) If the condition for irrotationality in 2-D is given by Eq. 6, is the flow field in Eq. 5 irrotational? If yes, what is the velocity potential? du x y - = 0 Eq. 5 Eq. 6