7. Integrate a). fav2 + xdx on b). [& sing +sin ( 1an do sec # arch C ) . [ V2 + vidx Roster O-Matic 8. Sketch the region enclosed by the curves. Decide whether to integrate with respect to x or y. Draw a typical approximationg rectangle and label the points of intercepts of the curves. Then find the area of the region by integration. y = 4x and y = 2x 10 -10 -8 -6 -4 -2 2 4 6 8 10 N -10