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MathGroup Archive 2006

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RE: SImple Plot3D issue

  • To: mathgroup at
  • Subject: [mg68607] RE: [mg68564] SImple Plot3D issue
  • From: "David Park" <djmp at>
  • Date: Fri, 11 Aug 2006 04:40:46 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

All Mathematica symbols begin with capital letters. So I think you mean to
use 'E' rather than 'e'.

Plot3D[E^-(x^2 + y^2) (x^2 + 2 y^2), {x, -3, 3}, {y, -3, 3}];

David Park
djmp at

From: jtolman at [mailto:jtolman at]
To: mathgroup at

I am trying to plot the 3D function e^-(x^2 + y^2) (x^2 + 2y^2)

Plot3D[e^-(x^2 + y^2) (x^2 + 2 y^2), {x, -3, 3}, {y, -3, 3}]

I get not machine-size real number errors.  When I try

f = e^-(x^2 + y^2) (x^2 + 2 y^2)

I get a Syntax::noinfo: insufficient information error, although the
output looks like a valid textbook style equation.

I've tried several variations on input but can't figure out where the
syntax mistake is.

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