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Re: Fourier Transform

• To: mathgroup at smc.vnet.net
• Subject: [mg124270] Re: Fourier Transform
• From: "Dr. Wolfgang Hintze" <weh at snafu.de>
• Date: Sat, 14 Jan 2012 17:18:02 -0500 (EST)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• References: <jercl1$1d8$1@smc.vnet.net>

<jstorch at earthlink.net> schrieb im Newsbeitrag 
news:jercl1$1d8$1 at smc.vnet.net...
> Mathematica hangs when trying to evaluate the simple Fourier 
> Transform
> of H(a-|t|).
>
> FourierTransform[HeavisideTheta[a-abs[t]],t,w,Assumptions->a>0]
>
> (The answer should be Sqrt(2/Pi) (Sin[w a])/w  )
>

It's a simple typing error: use Abs instead of abs and it will work out 
fine.
(furthermore I used UnitStep instead of HeavisideTheta).

Regards,
Wolfgang