27. c: x2 counterclockwise crom (1, 0) to (0, l) x) dv + xydy C : the line segtnent from (3, 4) to (2, l) y: dr xcdy -F nyck x 2 dx+x.vdy+z d: C: x sint , v = cost 2 (0 t rr/2) 27. c: x2 counterclockwise crom (1, 0) to (0, l) x) dv + xydy C : the line segtnent from (3, 4) to (2, l) y: dr xcdy -F nyck x 2 dx+x.vdy+z d: C: x sint , v = cost 2 (0 t rr/2)