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MathGroup Archive 2003

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Re: Integration of Exp[-x^2]/(1 + Exp[a * x])

  • To: mathgroup at smc.vnet.net
  • Subject: [mg39638] Re: Integration of Exp[-x^2]/(1 + Exp[a * x])
  • From: Marc Noël <marc.noel at skynet.be>
  • Date: Thu, 27 Feb 2003 00:27:30 -0500 (EST)
  • Organization: MGE / école sup des affaires
  • References: <b3hs7u$iki$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

with your exact input (copy and paste) I get
\!\(\[ExponentialE]\^\(-x2\)\ \((x -
         Log[1 + \[ExponentialE]\^\(a\ x\)]\/a)\)\)
it just works fine,

did you push shift return or enter to get the  evaluation done

marc

Stefan a écrit:
> Hello,
> 
> 
> 
> I have to integrate the function Exp[-x^2]/(1 + Exp[a * x]) where a is
> real-valued parameter. Unfortunately
> 
> 
> 
> Integrate[Exp[-x^2]/(1 + Exp[a * x]), x]
> 
> 
> 
> yields no results. Does anyone know a clever trick I might have missed? Any
> hint would be welcome,
> 
> 
> Thanks in advance, Stefan
> 
> 
> 
> 



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