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Newbie Question -- Plot3d::plnc

  • To: mathgroup at
  • Subject: [mg52698] Newbie Question -- Plot3d::plnc
  • From: jujubaby at
  • Date: Thu, 9 Dec 2004 20:23:12 -0500 (EST)
  • Sender: owner-wri-mathgroup at

X-No-Archive: Yes

When I enter the following two statements into Mathematica 5:

xtimesy[x_, y_] := x*y;
Plot3D[xtimesy[x y], {x, -5, 5}, {y, -5, 5}]

I receive a huge cascade of errors, all of this form:

Plot3D::plnc: xtimesy[x\y] is neither a machine-size real number at \
{x,y}={-5.,-5.} nor a list of a real number and a valid color

What am I doing wrong?



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