use shell method to find the volume by under y=x = over [1,4] rotating the region under y=x-Ź about X=-3. (20 points) #9 Find a SX² sect dt d dx Sect dt (10 points) #10 A revolving light, located 5 km from a straight shoreline, turns at constant angular speed of 3 rad/min. With what speed is the spot of light moving along the