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Homework Help: 3D graphing

  1. Feb 25, 2007 #1
    I'm looking for a program which can draw 3D graphs which can identify the generating curves and ruling.

    i'm trying to draw up these 2 graphs

    z = 2x^2 + y^2

    x^2/9 + y^2/9 + z^2/16 = 1

    any ideas?
     
  2. jcsd
  3. Feb 25, 2007 #2

    benorin

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    Homework Helper

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