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hils0005
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Homework Statement
Parametrize a surface obtained by revolving the curve y = lnx, as x goes from 1 to 10 about the y axis
The Attempt at a Solution
y=lnx
x=lnxcos(theta)
z=lnxsin(theta)
vector r(x,theta) = lnx cos(theta) i + lnx j + lnxsin(theta) k
0[tex]\leq[/tex] (theta) [tex]\leq[/tex] 2pi
1[tex]\leq[/tex] x [tex]\leq[/tex] 10
I'm not really sure how to complete, or if this is correct-any ideas would be helpful, thanks