Use the given transformation to evaluate the integral. double integral (x-3y)dA, where R is the triangular region with vertices (0, 0), (2, 1) and (1, 2); x=2u+v, y=u+2v
Use the given transformation to evaluate the integral. double integral (x-3y)dA, where R is the triangular region with vertices (0, 0), (2, 1) and (1, 2); x=2u+v, y=u+2v