Re: FourierTransform of Sinc Function

*To*: mathgroup at smc.vnet.net*Subject*: [mg44335] Re: FourierTransform of Sinc Function*From*: "Steve Luttrell" <luttrell at _removemefirst_westmal.demon.co.uk>*Date*: Wed, 5 Nov 2003 10:01:48 -0500 (EST)*References*: <200310281053.FAA25777@smc.vnet.net> <bo7of6$ag8$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

In version 5 FourierTransform[Sin[x]/x, x, k] produces the output (1/2)*Sqrt[Pi/2]*(Sign[1 - k] + Sign[1 + k]) which is a top-hat function that plots out as expected -- Steve Luttrell West Malvern, UK "Kieng" <Sorasak at brown.edu> wrote in message news:bo7of6$ag8$1 at smc.vnet.net... > Dear All, > > I tested the Fourier Function on a sinc function which should give the > top-hat but mathatmatica gave some mysterious plot that I don't understand. > Anyone knows what is going on. > > Thank you very much, > Sorasak > >