1. Find the work done by the gradient of f (3:, y) = (a: + y)2 counterclockwise around the circle 3:2 + 3,12 = 4 from (2,0) to itself. Find the circulation and ux of the eld F(m,y) = (any) along and across the curve 7(t) = (cost, 4sint),t E [0, 27r] 2. Find the circulation and flux of the eld F(u:,y) = (y, 2:) along and across the curve 1(t) = (cost, 4sin t),t E [0, 27r]