Consider the region D = {(x, y) = R | x 2, (x 2) + y 1}. 1 Using the polar coordinates transformation with center at the point (1, 0) shows that D is the image of a simple region in the plane (r, 0). Compute the double integral dA, x-1 exploiting the change of variable just discussed. Consider the region D = {(x, y) = R | x 2, (x 2) + y 1}. 1 Using the polar coordinates transformation with center at the point (1, 0) shows that D is the image of a simple region in the plane (r, 0). Compute the double integral dA, x-1 exploiting the change of variable just discussed.