Re: Bug with LaplaceTransform?
- To: mathgroup at smc.vnet.net
- Subject: [mg83532] Re: Bug with LaplaceTransform?
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Thu, 22 Nov 2007 04:50:08 -0500 (EST)
- Organization: The Open University, Milton Keynes, UK
- References: <fi0qfg$6ok$1@smc.vnet.net>
chuck009 wrote:
> The Laplace Transform integral seems not to converge for any s for the function f(x)=1/x but LaplaceTransform returns -EulerGamma-Log(s) for this function:
>
>
> LaplaceTransform[1/x, x, s]
> Integrate[1/(x*Exp[s*x]), {x, 0, Infinity}]
>
> Is this a bug?
Seems to be a novelty of version 6. Version 5.2 returns infinity.
In[1]:=
LaplaceTransform[1/x,x,s]
Out[1]=
Infinity
In[2]:=
$Version
Out[2]=
5.2 for Microsoft Windows (June 20, 2005)
Regards,
--
Jean-Marc