l Consider the vector field F(x,y) = ã-xy,2,2ã. a) Let Ci be the quarter circle from (0, 2) to (-2,0). Evaluate F dr. (Hint: C1 can be parameterized by r(t)-ã 2cos(t). 2sin(t) ã for Ï/2 ã K Ï.) b) Let C2 be the line segment from (0,2) to (-2,0). Evaluate F dr.