_. (1 point) Lari: (7z +7x3) ?+ (3y+4z+4sin(y3)) 7+ (7x +4y+3ez3) k. (a) Find curl F. curl F = (b) What does your answer to part (a) tell you about [C I? - d? where C is the circle (x 20)2 + (y 5)2 = 1 in the xyplane, oriented clockwise? [C F - dr = (c) If C is any closed curve, what can you say about [C 13- 451?? > _, [CF-(1r: (CD Now let C be the half circle (x 20)2 + (y 5)2 = 1 in the xy-plane with y > 5, traversed from (21, 5) to (19, 5). Find [C I? - d? by using your result from (c) and considering C plus the line segment connecting the endpoints of C. [CF-(1