Question

The region bounded by y=2/x, y=0, x=1, and x=3 is rotated about the x-axis. Find the volume of the resulting solid.

Answer 1

evaluate \[\pi \int\limits_{1}^{3}(2/x)^2 dx\]

Answer 2

It's using the disc method.

Answer 3

I got it :) 8pi/3