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MathGroup Archive 2006

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Re: Mathematica question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg71980] Re: Mathematica question
  • From: "dimitris" <dimmechan at yahoo.com>
  • Date: Thu, 7 Dec 2006 06:25:22 -0500 (EST)
  • References: <el689f$2qb$1@smc.vnet.net>

First it is better to show us your function!

Sometimes, you can "help" Mathematica a bit in order to get a closed
form result from a
definite integration, show if we know the function it will be easier to
proceed!

Anyway, note that if Mathematica cannot provide a closed form result
this does not mean that your integral cannot be done analytically.
Remember, you have a very powerful tool in your hand called Contour
Integration.

Also, take a lok of the many great integral (transform) tables books
published over the years such as those
of
P. Prudnikov, Yu. A. Brychkov, and O. I. Marichev
Erdélyi, A.; Oberhettinger, M. F.; and Tricomi, F. G
Bateman, H
Gradshteyn,Ryzhik,Jeffrey and Zwillinger
Fritz Oberhettinger

See also here

http://eqworld.ipmnet.ru/en/auxiliary/aux-inttrans.htm

As regards the numerical treatment...again we need to see your
function; for it may need special treatment!

Regards
Dimitris



Î?/Î? d_herrmann at onlinehome.de έγÏ?αÏ?ε:
> Hello!
> I have got a question concerning using Mathematica:
> I want to calculate the FourierTransform of a function and Mathematica can not solve this. It seems like, it hast to be calculated numerically.
> What can I do?
> 
> Thank you very much!
> 
> Daniel Herrmann


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