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Re: newbie question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg45055] Re: newbie question
  • From: drbob at bigfoot.com (Bobby R. Treat)
  • Date: Sun, 14 Dec 2003 06:23:03 -0500 (EST)
  • References: <brfual$fbs$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

xy is a third variable -- not x*y. You mean x y (space between).

Bobby

kashcow1 at hotmail.com (ak) wrote in message news:<brfual$fbs$1 at smc.vnet.net>...
> I'm new to the software, and am having trouble with a simple command:
> 
> Plot3D[Sin[xy], {x, 0, 3}, {y, 0, 3}];
> 
> This is giving me: Plot3D::plnc: Sin[xy] is neither a machine-size
> real number at {x, y}={0., \
> 0.} nor a list of a real number and a valid color directive
> 
> I must be missing something obvious, what could I be doing wrong here?
> I don't think you need to load any packages to do this, do you?


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