To evaluate the following integrals carry out the following steps.

a. Sketch the original region of integration R and the new region S using the given change of variables.

b. Find the limits of integration for the new integral with respect to u and v.

c. Compute the Jacobian.

d. Change variables and evaluate the new integral.

[[xx + 2y dA; R = {(x, y): 0 x 2, R -x/2 y 1-x}; ; use x = 2u, y = v- u.