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Math Help - find the volume of the region...

  1. #1
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    find the volume of the region...

    ok this is a weird problem...up til now i have always worked with numbers, mainly functions i can graph. i dont know how to graph this. in this problem i am supposed to find the volume of the region about the y-axis and then about the x-axis using either the shell or disk method. any help would be greatly appreciated. also is there a good website that i can use to graph these functions? thanks in advance...
    Last edited by slapmaxwell1; May 4th 2010 at 04:31 PM. Reason: forgot to add the problem
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  2. #2
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    here is a copy of the problem. sorry about that, i forgot to attach it to the regular message. thanks.

    IMG.pdf
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  3. #3
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    volume

    Hello,

    Around x-axis

    The voulme of a region turned 360 around the x-axis is:

    V=\pi \int_{a}^{b}(f(x))^{2}dx


    Around y-axis

    The voulme of a region turned 360 around the y-axis is:

    V=2\pi \int_{a}^{b}x(f(x))dx
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  4. #4
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    thanks for your reply, were you able to view the problem? i attached it as a reply to the message.
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  5. #5
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    Quote Originally Posted by slapmaxwell1 View Post
    thanks for your reply, were you able to view the problem? i attached it as a reply to the message.
    Yes I could see the file attached. It opened as a PDF-file.
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