Consider the vector field
F(x, y, z) = e^{y+z}i + e^{x+z}j + y^3k
Let C be the ellipse, with anticlockwise orientation, resulting from the intersection of the plane x + y + z = 6 with the cylinder x^2 + y^2 = 1.
(a) Compute ∇ · F and ∇ × F.
(b) Using Stokes' theorem, evaluate the work integral ∫_C F · dr