F. dr. where F(ry, :) = ( arctan(H), er"5y+13) and C is the oriented curve comprised of three line segments connecting, in order, (1,0,0), (0, 1,0), and (0, 0, 1). (Hint d. What does this have to do with the plane parameterized by r(z, y) = (x, y, 1-r-y)?)