Re: Functions with Variables with Indices
- To: mathgroup at smc.vnet.net
- Subject: [mg29415] Re: [mg29394] Functions with Variables with Indices
- From: Benjamin M <Benjamin.M at gmx.de>
- Date: Mon, 18 Jun 2001 03:39:13 -0400 (EDT)
- References: <NDBBJGNHKLMPLILOIPPOAEMKCHAA.djmp@earthlink.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
Thank you for your help!
I think my problem was that I used the subscript in the definition of the
function (at the point >>HERE<< in the quoted text).
> Subscript[f, 1][x>>HERE<<_] := Sin[x]
> Plot[Subscript[f, 1][x], {x, 0, 2*Pi}];
> Plot[Subscript[f, 1][Subscript[x, 1]],
> {Subscript[x, 1], 0, 2*Pi}];
> Plot[Subscript[f, 1][Subscript[x, u]],
> {Subscript[x, u], 0, 2*Pi}];
However, sometimes it still has worked when I tried it several times. I
don't know why.
The following two statements don't work in my Mathematica:
Subscript[\[Sigma], k] = 1
Subscript[k, 0] = 5
f[k_] := 1/(Sqrt[2*Pi]*Subscript[\[Sigma], k])/
E^((k - Subscript[k, 0])^2/(2*Subscript[\[Sigma], k]^2))
Plot[Evaluate[f[x]], {x, -10, 10}]
f[k_, Subscript[\[Sigma], k]*_, Subscript[k, 0]*_] :=
1/(Sqrt[2*Pi]*Subscript[\[Sigma], k])/
E^((k - Subscript[k, 0])^2/(2*Subscript[\[Sigma], k]^2))
Plot[Evaluate[f[k, 1, 5]], {k, -10, 10},
PlotRange -> {0, 0.8}]
Clear[f, Subscript[\[Sigma], k], Subscript[k, 0]]
Do you think the problem is the Subscript in the definition?