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Revolution of a curve along a axis

  1. Oct 22, 2009 #1
    1. The problem statement, all variables and given/known data
    given z =y3 revolved around the y axis what is the equation of the surface and then graph.


    2. Relevant equations



    3. The attempt at a solution
    I have no idea how to approach this, i tried searching around the net but nothing came out. pls help.
     
  2. jcsd
  3. Oct 22, 2009 #2

    lanedance

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    start with the equation of a circle of radius z = y^3, with centre on the y axis & in a plane perpindicular to the y axis
     
  4. Oct 22, 2009 #3
    ^ what i need is a step by step solution and i learn to solve other problems if i see how it is done.
     
  5. Oct 22, 2009 #4

    lanedance

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    sorry, you have to try - i'm happy to walk you through it if you attempt, but I'm not just going to do it all for you
     
  6. Oct 26, 2009 #5

    tiny-tim

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    Hi kazthehack! :wink:

    Start with a single point z =y03 (for a fixed value y0) revolved around the y axis …

    what is the equation of that? :smile:
     
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