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Homework Help: Surface made by two curves

  1. May 17, 2008 #1

    Jasty

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    1. The problem statement, all variables and given/known data

    y=x^2-2.x
    y=x^3

    2. Relevant equations

    none

    3. The attempt at a solution

    I have no idea how to do this so please help me. Thank you.
     
    Jasty, May 17, 2008
  2. jcsd
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  3. May 17, 2008 #2

    tiny-tim

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    Science Advisor
    Homework Helper

    Hi Jasty! :smile:

    Are you trying to find the area?

    If so, divide it into slices of thickness dx, find the area of each slice, and integrate. :smile:
     
    tiny-tim, May 17, 2008
  4. May 17, 2008 #3

    HallsofIvy

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    Science Advisor

    1. Draw their graphs.

    2. Determine where they intersect.

    3. Imagine the area divided into thin, vertical rectangles.

    4. What would be the area of each of those rectangles?

    5. Their total area is a Riemann sum. Convert that into an integral.
     
    HallsofIvy, May 17, 2008
  5. May 17, 2008 #4

    Jasty

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    Thanks a lot. Finally, i found out how to deal with this one.
     
    Jasty, May 17, 2008
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