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Mathematica help

  1. Oct 14, 2008 #1
    I'm trying to plot this
    f (x, y) = ln(x^2 + y^2 )

    any one got a idea how to?
  2. jcsd
  3. Oct 14, 2008 #2
    Plot3D[f, {x, xmin, xmax}, {y, ymin, ymax}]
    make a three-dimensional plot of f as a function of the
    variables x and y
  4. Oct 14, 2008 #3


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    More accurately,

    Plot3D[Log[x^2 + y^2], {x, xmin, xmax}, {y, ymin, ymax}]


    f[x_,y_]=Log[x^2 + y^2]
    Plot3D[f[x,y], {x, xmin, xmax}, {y, ymin, ymax}]
  5. Oct 14, 2008 #4
    i want to make this symmetric in both x and y with 2 graph by using the cartesian coordinate system with the plot3D command and secondly using the cyclindrical coordinate system using the parametricplot3d command. been a long time since i've used mathematica but i don't think your codes does the above right?
  6. Oct 15, 2008 #5
    anyone ?
  7. Oct 16, 2008 #6


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