RE: newbie question
- To: mathgroup at smc.vnet.net
- Subject: [mg45040] RE: [mg45019] newbie question
- From: "David Park" <djmp at earthlink.net>
- Date: Sun, 14 Dec 2003 06:22:36 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
You must use a space or an * to indicate multiplication. xy is not x times y
but a new two character symbol.
Plot3D[Sin[x y], {x, 0, 3}, {y, 0, 3}];
David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/
From: ak [mailto:kashcow1 at hotmail.com]
To: mathgroup 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?