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Re: Laplace Transform Exponential Shift

  • To: mathgroup at smc.vnet.net
  • Subject: [mg96462] Re: Laplace Transform Exponential Shift
  • From: Peter Breitfeld <phbrf at t-online.de>
  • Date: Sat, 14 Feb 2009 03:08:21 -0500 (EST)
  • References: <gn3bnq$pth$1@smc.vnet.net>

Marc wrote:

> Hi there, I have noticed that mathematica 6 does not evaluate the
> inverse Laplace transform of L(s) = Exp(a s) where s is the transform
> variable.
>
> InverseLaplaceTransform[Exp[a s],s,t]
>
> is returned unevaluated!
>
> It may need to know that a>=0, but the InverseLaplaceTransform does
> not allow Assumptions like the LaplaceTransform.
>
> Does anybody know how I can get this to work?
>

in V.7 this seems to work, returns 1/(t-a)

GruÃ? Peter 
-- 
_________________________________________________________
Peter Breitfeld, Bad Saulgau --- http://www.pBreitfeld.de


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