3. Evaluate Z F dr, where F = (x2, xy). C consists of the parts C1, C2, C3 and C = C1 C2 C3. 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