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MathGroup Archive 2001

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Re: Problem with funktion with four variables

  • To: mathgroup at smc.vnet.net
  • Subject: [mg31631] Re: Problem with funktion with four variables
  • From: "Avraham Shinnar" <as1619 at columbia.edu>
  • Date: Mon, 19 Nov 2001 03:11:12 -0500 (EST)
  • Organization: Columbia University
  • References: <9t86er$r6n$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

The problem is the subscript - your definition has full form:
\!\(test[_\ Subscript[v, 0], \[Gamma]_, H_,
                    m_] := \(-\(\(\((m\ H)\)\ Cosh[
                              ArcSinh[\(Subscript[v, 0]\ \
\[Gamma]\)\/H]]\)\/\[Gamma]\^2\)\) - \(m\ ArcSinh[\(Subscript[v, 0]\ \
\[Gamma]\)\/H]\ Subscript[v, 0]\)\/\[Gamma]\)

try
\!\(test[v0_, \ \[Gamma]_, \ H_, \
      m_] := \((\(\(-m\)*H\)\/\[Gamma]\^2*Cosh[ArcSinh[v0*\[Gamma]\/H]] -
        m\/\[Gamma]*ArcSinh[v0*\[Gamma]\/H]*v0)\)\)
instead.


"Manuel Prinz" <manuel.prinz at t-online.de> wrote in message
news:9t86er$r6n$1 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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