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Simple Plot3D/Function Syntax issue

  • To: mathgroup at
  • Subject: [mg68566] Simple Plot3D/Function Syntax issue
  • From: "JTolman" <jtolman at>
  • Date: Wed, 9 Aug 2006 23:57:05 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

When I enter
f = e^-(x^2 + y^2) (x^2 + 2y^2)
It gives me a syntax::noinfo error but the output looks like the
correct textbook style function.

Also, when I try to plot it
Plot3D[e^-(x^2 + y^2) (x^2 + 2y^2), {x, -3, 3}, {y, -3, 3}]
It of course gives me not machines-size real number errors, which I am
assuming have more to do with my original syntax error.  I've tried
several variations but can't figure out what needs to be corrected.

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