# Calculus

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Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis.

y=ln x, y=0, x=1, x=3

• Calculus -

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.

• Calculus -

http://www.karakas-online.de/forum/viewtopic.php?t=4026

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