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Scientific notebook - plotting 3d surface

  1. Jul 29, 2008 #1
    Hi, I wish to plot a 3d surface but as of now have not been able to!

    I wish to plot z=f(x,y)=[x²+y²-1]^1/2 restricted to the domain:

    dom(f) = {(x,y)|=1 ≤ x² + y² ≤5}

    Any step by step instructions would be greatly appreciated!
    Thanks in advance!
  2. jcsd
  3. Jul 30, 2008 #2
    bump! anyone!
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