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MathGroup Archive 1997

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Re: Fourier Help!!

  • To: mathgroup at smc.vnet.net
  • Subject: [mg6438] Re: Fourier Help!!
  • From: mightymouse at supertech.com (MightyMouse)
  • Date: Fri, 21 Mar 1997 22:59:28 -0500 (EST)
  • Organization: SuperTech
  • Sender: owner-wri-mathgroup at wolfram.com

In article <5gqklt$94q at smc.vnet.net>, Woo Sanghyuk <jyun at planete.net> wrote:

> Why "Fourier" doesn't work??
> 
> In = Fourier[{-1, -1, -1, 1, 1, 1}]
> 
> Out = Fourier[{-1, -1, -1, 1, 1, 1}]
> 
> I'm using Mathematica v2.2.2 on Macintosh performa 5200 with MacOS 7.6.
> I'm very urgent...

Hi, there....
My mma runs well....
I use mma 3.0 on pb5300cs..OS 7.5.5
In[1]:=Fourier[{-1, -1, -1, 1, 1, 1}]
Out[1]=
{0. + 0. I, -0.816497 - 1.41421 I, 
 
           -17             -16
  -3.318 10    - 1.35974 10    I, -0.816497 + 0. I, 
 
            -17             -16
  7.85046 10    - 1.35974 10    I, -0.816497 + 1.41421 I}

or 
Out[1]=
{0.+0. I, -0.816497-1.414121 I,-3.318 10^-17 - 1.35974 10^-16 I,
-0.816497+0. I,7.85046 10^-17 - 1.35974 10^-16 I, -0.816497+1.41421 I}

If it never works, try this one...
Fourier[{-1, -1, -1, 1, 1, 1}] //N

It gives you a numerical result...

sungshin at mom.postech.ac.kr


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