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natemac42
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Homework Statement
The function ln(x) is rotated around the x-axis on the interval [1,4].
Homework Equations
Find the volume of the figure using integration.
The Attempt at a Solution
[tex]\pi[/tex] [tex]\int _{1}^{4} (.75) ln(x)^{2} dx[/tex]
= [tex]\pi[/tex] [tex]\int _{1}^{4} [3(ln(x))^{2}]/4 [/tex]
sorry I'm bad at typing these things in
anyway solving that I got 6.1187 units^3 and I don't think it's the correct answer, but I'm not sure.
I approximated the volume using cylinders and got 10.518 for circumscribed and 5.989 for inscribed.
Thanks in advance