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Plotting a parametric equation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg111530] Plotting a parametric equation
  • From: Mapsread <cw_chw at yahoo.com>
  • Date: Wed, 4 Aug 2010 05:50:13 -0400 (EDT)

Greetings,

I would like to see the graph of u=.5(x+y), v=.5(x-y), w= z - .5(x^2 -
y^2).

I entered this into the command-line of Mathematica:

ParametricPlot3D[{0.5` (x + y), 0.5` (x - y),
  z - 0.5` (x^2 - y^2)}, {x, -1000000, 1000000}, {y, -1000000,
  1000000}]

All I get is a big empty box spanning from -1 to 1 on all sides. Is
there something I need to do to make this work?

TIA

P.S. For some reason, Mathematica changes my "*" symbols to "'"
symbols. Does ' mean multiply?


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