Let R be the region enclosed by the graphs of y = x 2 + 1 and y = 2x + 1. In each part,
Let R be the region enclosed by the graphs of y = x 2 + 1 and y = 2x + 1. In each part, write down the integral expression that uses the disk or washer method to compute the volume of the solid of revolution obtained by rotating the region R across the indicated line. Finally, compute this volume using Desmos and report the answer, rounded to 2 decimal places. Be sure to show work. (a) The x-axis (i.e. y = 0) (b) The vertical line x = 3.
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