Mathematica 9 is now available
Student Support Forum
-----
Student Support Forum: 'What's going on here?' topicStudent Support Forum > General > "What's going on here?"

Next Comment >Help | Reply To Topic
Author Comment/Response
xuemei gu
08/19/98 11:31pm


I tried to compute the Fourier Transformation of
standard Guassian distribution (exp(-x^2/2), or say I
typed:
Integration[Exp[-x^2/2]Cos[kx],{x,-Infinity,
Infinity},k->Constant]
The result was:
Sqrt(2*Pi)cos(kx)
which was obviously wrong and the correct answer
should be Sqrt(2*Pi)exp(-k^2/2).

I changed another way to define k
(SetAttributes[k,Constant]), the result was still the
same ridiculous. Can anyone tell me why?

Many thanks.


URL: ,

Subject (listing for 'What's going on here?')
Author Date Posted
What's going on here? xuemei gu 08/19/98 11:31pm
Re: What's going on here? Forum Modera... 08/21/98 10:16pm
Next Comment >Help | Reply To Topic