Need help with these 2. Do not copy from other answers please.

(5) Consider a particle that moves along linear paths going from (4,1) to (2, 0). then to (0, 1), then to (2, 2) and nally back to (4,1): M Compute the work done by the force to move our particle along the trajectory described above. (6) Let W be the region in R3 inside x2 + y? = 1 that is below z = 3 - x2 - yz and abovez = Va2 + 2 . More precisely, W = {(x, y, z) : x2 +?