Let R be the region inside the ellipse x = 4 cos θ, y = 3 sin θ and outside the circle x = 2 cos θ, y = 2 sin θ. Evaluate the line integral (3x2y + 9) dx + (x3 + 7x) dy where C C1 C2 is the boundary of R, as shown in the figure Cj: Ellipse C: Circle C2