Consider the two-dimensional flow field in which u = Ax and v = Bxy, where A = 1.6 ms, B = -3.3 m 's, and the coordinates are measured in meter. Show that the velocity field represents a possible incompressible flow. Determine the rotation at point (x, y) = (0.3, 0.3). Evaluate the circulation about the "curve" bounded by y=0, x = 0.3, y = 0.3, and x = 0.