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MathGroup Archive 2002

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FourierTransform problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg35081] FourierTransform problem
  • From: David Turner <dturner at faulkner.edu>
  • Date: Mon, 24 Jun 2002 03:21:12 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Hello,

I am using Mathematica for Students 3.0.1 with Windows 98.  When I execute
the following code, I get the error messages below:

In[1]:=
<<Calculus`FourierTransform`

In[2]:=
Clear[fx, fw, a]

In[3]:=
a:=1

In[4]:=
fx[x_]:=Exp[-Abs[x*a]]

In[5]:=
fw[w_]:=InverseFourierTransform[fx[x], x, w]

In[6]:=
Plot[fw[w], {w, -5*a,5*a}]

Plot::plnr : fw[w] is not a machine-size real number at w = -5..
Plot::plnr : fw[w] is not a machine-size real number at w = -4.59433..
Plot::plnr : fw[w] is not a machine-size real number at w = -4.15191..
General:: stop : Further output of Plot::plnr will be suppressed during this
calculation.

Does anyone know where I might obtain a corrected FourierTransform.m package
for Mathematica 3.0.1?  My copy is dated 7/21/97.  I contacted Wolfram about
this matter.  However, they told me they no longer support version 3.0.  I
appreciate any help you may provide.

Thanks.

David



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