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#1 2009-03-13 05:45:40
- Danbee
- Member
- Registered: 2008-08-28
- Posts: 21
Application of integral
The curve y=x³, 0≤ x≤ 3, is rotated about the y-axis. What volume does the resulting surface enclose? Use x as the dependent variable.
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#2 2009-03-14 12:03:38
- Ricky
- Moderator
- Registered: 2005-12-04
- Posts: 3,791
Re: Application of integral
Where are you getting stuck?
"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."
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#3 2009-03-16 08:20:21
- Danbee
- Member
- Registered: 2008-08-28
- Posts: 21
Re: Application of integral
Still don't get it
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#4 2009-03-16 10:24:35
- JaneFairfax
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- Registered: 2007-02-23
- Posts: 6,868
Re: Application of integral
Ricky is asking you how far you have got to with your own attempt at answering the question. If you havent made a start yet, then you should (so we know youre not just being lazy and waiting to copy someone elses post).
The first thing you should do is to make a sketch of the part of the curve to be rotated.
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