RE: Problem with funktion with four variables

• To: mathgroup at smc.vnet.net
• Subject: [mg31626] RE: [mg31618] Problem with funktion with four variables
• From: "David Park" <djmp at earthlink.net>
• Date: Mon, 19 Nov 2001 03:11:06 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

```Manuel,

If you look at the left hand side of your definition in full form you will
see that the v sub 0 pattern is not actually a pattern at all.

test[Times[Blank[], Subscript[v, 0]], Pattern[\[Gamma], Blank[]],
Pattern[H, Blank[]], Pattern[m, Blank[]]]

The simplest solution is just to use v0 (without a subscript) in the
definition. After all, it is only a dummy variable anyway.

David Park

> From: Manuel Prinz [mailto:manuel.prinz at t-online.de]
To: mathgroup at smc.vnet.net
>
> Hello Guys
>
> If I define this
>
> \!\(test[\(v\_0\) _, \ \[Gamma]_, \ H_, \
>       m_] :=
> \((\(\(-m\)*H\)\/\[Gamma]\^2*Cosh[ArcSinh[v\_0*\[Gamma]\/H]] -
>         m\/\[Gamma]*ArcSinh[v\_0*\[Gamma]\/H]*v\_0)\)\)
>
> and then try to calculate test[14,500,100,80] nothing happens!
>
> What could be the problem?
>
>
> Thanks!
>
>
> Manuel (Mathematica 4.0)
>

```

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