Re: Mathematica conundrum
- To: mathgroup at christensen.cybernetics.net
- Subject: [mg1786] Re: Mathematica conundrum
- From: grant at math.byu.edu (Chris Grant)
- Date: Sun, 30 Jul 1995 21:37:48 -0400
- Organization: Brigham Young University
In article <DC96CK.EsK at wri.com>, Zorro <berriz at husc.harvard.edu> writes:
|> Hi. When I issue the command
|>
|> Plot[Exp[-5x],{x, 0, 5}, PlotRange->{0,1}];
|>
|> Mathematica produces the plot without a hitch. Similarly, when I
|> issue
|>
|> Plot[Exp[-x],{x, 0, 5}];
|>
|> Likewise, the command
|>
|> Plot[Evaluate[Table[Sin[n x],{n, 5}]],
|> {x, 0, 1}, PlotRange->{-1, 1}];
|>
|> produces, as expected, a series of superimposed sine waves. BUT,
|> Mathematica balks at
|>
|> Plot[Evaluate[Table[Exp[-nx],{n, 5}]],
|> {x, 0, 5}, PlotRange->{0, 1}];
|>
|> spitting out
|>
[...]
|> Why is this?
Because you didn't put a space between the n and the x.
Mathematica thinks "nx" is the name of a single variable,
a variable for which no value is assigned.
Chris Grant
grant at math.byu.edu