2. a. Solve the system forx and y in terms of u and V. Then find the value of the Jacobian a(z, y) /0(u, u). b. Find the image under the transformation u-x + 2y, u = z-y of the triangular region in the xy-plane bounded by the lines y = 0, y = z, and z 2y 2, Sketch the transformed region in the uv-plane.