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MathGroup Archive 1999

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Re: A simple question? Please help

  • To: mathgroup at smc.vnet.net
  • Subject: [mg20490] Re: [mg20435] A simple question? Please help
  • From: steffenz at server2.fo.FH-Koeln.DE
  • Date: Wed, 27 Oct 1999 02:04:53 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

Hello Don

You have to load the Fourier-Package first !

Needs["Calculus`FourierTransform`"]
LaplaceTransform[Sin[t], t, s]

bye

Steffen



> Date:          Tue, 26 Oct 1999 00:33:15 -0400
> From:          "Don Metcalf" <dmetcalf at fishinternet.com.au>
> To:            mathgroup at smc.vnet.net
> Subject: [mg20490]       [mg20435] A simple question?  Please help
> Organization:  Customer of Connect.com.au Pty. Ltd.

> Hello,
> 
> I'm having trouble getting Mathematica 3.0 to perform even the most basi=
c
> Laplace and Fourier transforms.  I have copied examples directly from th=
e
> help files and it still won't evaluate the output described in the notes=
!
> 
> The following is taken directly from the book
> 
> "This evaluates a Laplace transform.
> 
> LaplaceTransform[Sin[t], t, s]"
> 
> and the output should be 1/[1+s^2]
> 
> yet I just get the input returned.  Am I doing something really obviousl=
y
> wrong?  This has been bugging me.
> 
> kind regards,
> 
> Paul,
> 
> pdm03 at uow.edu.au
> 
> PS  Please email the above address to let me know of a reply if you can =
help
> 
> 
Dipl.-Ing. Steffen Zozgornik

Institut f=FCr Licht- und Bautechnik
an der Fachhochschule K=F6ln
Gremberger Stra=DFe 151 a
D - 51105 K=F6ln

Tel.: +49 - 221 - 83 10 95 
Fax.: +49 - 221 - 83 55 13 


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