Re: FourierTransform of Sign^2 ?
- To: mathgroup at smc.vnet.net
- Subject: [mg80048] Re: [mg79997] FourierTransform of Sign^2 ?
- From: Sseziwa Mukasa <mukasa at jeol.com>
- Date: Sat, 11 Aug 2007 02:12:44 -0400 (EDT)
- References: <200708100552.BAA10934@smc.vnet.net>
On Aug 10, 2007, at 1:52 AM, Jung-Tsung Shen wrote: > I tried to evaluate the following Fourier Transform: > > FourierTransform[Sign[y] Sign[y], y, q] > > where Sign is the sign function. Instead of Sqrt[2 Pi]*DiracDelta[q], > Mathematica (v. 5.0, Mac) gives > > -Sqrt[2 Pi]*DiracDelta[q] > > with a minus sign. Is this a bug or I am doing something wrong here? v5.2 on a Mac gives In[1]:= FourierTransform[Sign[y] Sign[y], y, q] Out[1]= Sqrt[2 Pi] DiracDelta[q] Regards, Ssezi
- References:
- FourierTransform of Sign^2 ?
- From: "Jung-Tsung Shen" <jushen@gmail.com>
- FourierTransform of Sign^2 ?