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MathGroup Archive 2005

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Re: problem with InverseLaplaceTransform

  • To: mathgroup at smc.vnet.net
  • Subject: [mg57991] Re: problem with InverseLaplaceTransform
  • From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
  • Date: Thu, 16 Jun 2005 05:35:48 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <d8ov0i$39$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

and you have taken into account that "{" and "}" 
is used for lists
and not for algebraic brakets ?

Regards
  Jens

"Barry Shaw" <barry.shaw at qub.ac.uk> schrieb im 
Newsbeitrag news:d8ov0i$39$1 at smc.vnet.net...
>
> Hi,
>
>
>
> I'm pretty new to Mathematica and am having 
> difficulty trying to derive
> an inverse laplace transform using Mathematica. 
> When I run the code,
> Mathematica starts to run (says "running..."), 
> but then just continues
> to remain like that and doesn't give an 
> answer....as if it has crashed
> or something.  The code I`m trying to run is 
> below (layout messed up,
> but if you copy and paste it back into 
> Mathemtica it`s fine):
>
>
>
> InverseLaplaceTransform[{{(muone (mufour + s) 
> (lambdathree + muthree +
>
>                  s) (lambdatwo + mutwo + s) +
>
>            lambdaone (lambdathree (lambdatwo 
> mufour +
>
>                        mutwo (mufour + s)) + 
> (mufour +
>
>                        s) (lambdatwo muthree +
>
>                        mutwo (muthree + s))))/(s 
> (mufour + s)
> (lambdaone +
>
>                muone + s) (lambdathree + muthree 
> + s) (lambdatwo +
> mutwo +
>
>                s) (1 - (muone (mufour + s) 
> (lambdathree + muthree +
>
>                            s) (lambdatwo + mutwo 
> + s) +
>
>                      lambdaone (lambdathree 
> (lambdatwo mufour +
>
>                                  mutwo (mufour + 
> s)) + (mufour +
>
>                                  s) (lambdatwo 
> muthree +
>
>                                  mutwo (muthree 
> + s))))/((mufour +
>
>                          s) (lambdaone + muone + 
> s) (lambdathree +
> muthree +
>
>                          s) (lambdatwo + mutwo + 
> s))))}}, s, t]
>
>
>
> Can anybody explain my problem?
>
>
>
> Thanks,
>
> Barry
>
>
> 



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