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MathGroup Archive 2007

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Re: FourierTransform help

  • To: mathgroup at
  • Subject: [mg72905] Re: [mg72869] FourierTransform help
  • From: Bob Hanlon <hanlonr at>
  • Date: Wed, 24 Jan 2007 17:49:39 -0500 (EST)
  • Reply-to: hanlonr at

s[t_] := Cos[t]*Exp[-t^2];

f[w_] = FullSimplify[FourierTransform[s[t], t, w]]

(E^(-(1/4) - w^2/4)*Cosh[w/2])/Sqrt[2]

Plot[f[w], {w, -3, 3}, PlotRange -> {0, 0.6}];

Bob Hanlon

---- rob <robIV at> wrote: 
> I can't seem to plot the result of what I would think would 
> be a simple transform. The following code at least attempts 
> to run with no errors but it doesn't seem to stop. I plan to 
> let it run all night. But surely one of you wizards knows a 
> way to get this to output a result quickly. If so, I would 
> appreciate your help.
> s[t_] := Cos[t] Exp[-t^2]
> Plot[Abs[Evaluate[FourierTransform[s[t], t, Ã?â?°]]], {Ã?â?°, -3,3}]

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