How do I solve this?

2) a) (Ex. 7.2.2 4pts) Evaluate the line integral [, F . ds for F = yi + 2xyj where C is the unit circle x2 + y? = 1 oriented counterclockwise. b) (Ex. 7.2.4.c 4pts) Evaluate the line integral f yzdx + xzdy + rydz where c consists of straight line segments joining (1, 0, 0) to (0, 1, 0) to (0, 0, 1). c) (Ex 7.2.18 4pts) Suppose Vf(x, y, z) = 2xyzeit zej + yer k. If f(0, 0, 0) = 5 find f (1, 1, 2).3) 21) (Ex. 7.3.10 3pts) Find an expression for a. unit vector normal to the surface :1: = 3cos9sin, y = 2sin9sin, z = cosqb for 6 6 [0,21], q') E [0,7r] b) (Ex 7.4.5.0 4pts) Find the area of the surface (Mum) = (8\" (305(1)),8\" sin(v),v) where (um) 6 [0,1] x [0,71']