Re: FourierTransform
- To: mathgroup at smc.vnet.net
- Subject: [mg52546] Re: FourierTransform
- From: "Steve Luttrell" <steve_usenet at _removemefirst_luttrell.org.uk>
- Date: Wed, 1 Dec 2004 05:58:36 -0500 (EST)
- References: <cohj7g$1nk$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Version 5.1 does it correctly. Steve Luttrell "Dr A.H. Harker" <a.harker at ucl.ac.uk> wrote in message news:cohj7g$1nk$1 at smc.vnet.net... > In Version 4 Mathematica was smart enough to know that > > FourierTransform[f'[x], x, k] > > should give > > -\[ImaginaryI] k FourierTransform[f[x], x, k]. > > Version 5 seems no longer to do this -- a nice classroom demonstration and > a valuable method of solving differential equations down in flames. > > Why is this? > > > Tony Harker (Dr A.H. Harker) > Deputy Head of Department > Deputy Head, Condensed Matter and Materials Physics Group > Department of Physics and Astronomy > University College London > Gower Street > LONDON > WC1E 6BT > (44)(0)207 679 3404 > a.harker at ucl.ac.uk > > >