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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: [mg31636] Re: [mg31618] Problem with funktion with four variables
  • From: BobHanlon at aol.com
  • Date: Mon, 19 Nov 2001 03:11:18 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

In a message dated 2001/11/18 7:18:49 AM, manuel.prinz at t-online.de writes:

>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?
>

The subscript doesn't work with the pattern

Clear[test];

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

test[14,500,100,80]

-((52*Sqrt[29])/125) - 
  (56/25)*ArcSinh[70]


Bob Hanlon
Chantilly, VA  USA


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