Let R be the region in Quadrant 1 bounded by the graphs of y=lnx and y=1.Find the exact volume of the solid generated by rotating R about the y-axis.

Thanks for help.

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- Mar 13th 2010, 12:09 PMjupiter92Volume of solid of revolution
Let R be the region in Quadrant 1 bounded by the graphs of y=lnx and y=1.Find the exact volume of the solid generated by rotating R about the y-axis.

Thanks for help. - Mar 13th 2010, 12:24 PMchisigma
The requested volume is...

(1)

Kind regards

- Mar 13th 2010, 12:30 PMjupiter92
thank you,could you tell me where did you get that e^2x?

- Mar 13th 2010, 12:32 PMTheMasterMind
- Mar 13th 2010, 12:45 PMchisigma
- Mar 13th 2010, 01:06 PMjupiter92
thanks.

- Mar 13th 2010, 01:07 PMjupiter92
btw,could you tell me what does the dx stand for?