2- calculates the integral (x +x +y + 2cosx)[ V. (3ldv when a- V is given by (xr - 1) + (y- 1)2 + (z - 2)2 < 2 b- V is a cube with the side of length 2, centered at the point x y z = 1\2 3- if is an arbitery vector field with continuous derivatives prone, without using any