5. Use Stokes' Theorem to evaluate the line integral ∫C y3
dx + 1 dy + (x + z2) dz,
where C is the triangle with vertices (2, 0, 0), (0, 2, 0), and
(0, 0, 2), oriented counterclockwise as viewed from above. Then
verify Stokes' Theorem by evaluating the line integral
directly.