please solve the attached

a). Sketch the region that is common to y = Vx, y = V2x,y = X and y and use the change of the 3 4 variables x=u/3v 3 and y=u 3v/3 to find the area of the region that is common to all. b). While designing the ceiling of a building at USP, the Engineers had the height above the floor as z =20+ -x. The engineers wanted to be creative so they made a wall whose path is modeled by 4 y = x/2. The mathematics students at USP were overwhelmed by this and using the concepts learned in class, decided to find the surface area of the wall for 0