Finding the Surface Area of the curve? y = 1/x 1 ≤ x ≤ ∞ about x-axis.
Last edited by racewithferrari; July 26th 2010 at 12:55 PM.
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I didn't check through your integration, but when you have an improper integral , just compute the limit
Are you familiar with improper integrals?
After solving it, the answer come to ∞. Right?
Originally Posted by racewithferrari After solving it, the answer come to ∞. Right?
Actually, I think you have an error in your integration. I checked it, and there's a problem:
Add the fractions in the radical
Plug this into the integral to get .
note that it is rather easy to show that diverges.
I did nothing wrong. I combined num and dem. The sqrt sign is on the top only.
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