PRACTICE TEST-3 (MATH 3450:223) Q.5: If a transformation T is given by x = f(u,v) and y = g(mu), what is the Jaco- bian of T ? Evaluate the double integral ffRe ) dA where R is a trapezoidal region with vertices (1,0), (0,-1), (2,0) and (0, -2), by making an appropriate change of variables. hint: e-1)