Posted by Pan on Saturday, March 29, 2008 at 2:23am.
Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the xaxis.
y=ln x, y=0, x=1, x=3
Please show the steps in your work, thanks! :)

Calculus  drwls, Saturday, March 29, 2008 at 2:51am
Each slab of width dx of the resulting solid is a circular disc with volume
pi (ln x)^2 dx
Integrate that function from x=1 to x=3.
You do the steps. We'll be glad to critique your work.

Calculus  drwls, Saturday, March 29, 2008 at 2:57am
This may help you doing the integration:
http://www.karakasonline.de/forum/viewtopic.php?t=4026
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