3. Evaluate F . dr, where F = (x2, xy). C consists of the parts C1, C2, C3 and C = CIUC2 UC3. C1 follows the upper part of the circle x2 + y2 = 4 from (2, 0) to (0, 2) (hence going counterclockwise). C2 follows the function y = f(x) = x + 2 from (0, 2) to (2, 4). Finally, C3 is the line segment from (2, 4) to (4, 3). Show all your work. (6 points)