Disk and cylindrical shells method. Include graph

1. Calculate the volume of the solid obtained by rotating the region bounded by y = x + 1, y = 2x, and y = 0 about the x-axis. 2. Calculate the volume of the solid obtained by rotating the region bounded by y = x + 1, y = 2x, and y = 0 about the y-axis. 3. Calculate the volume of the solid obtained by rotating the region bounded by y = sin(2x), y = the x-axis. 3. Calculate the volume of the solid obtained by rotating the region bounded by y = sin(2x), y = the y-axis. cos(2x), and x = 0 about cos(2x), and a = 0 about