Re: Integrals

[Jerome BENOIT <jgmbenoit@wanadoo.fr>]

Hello,

in this case, the general idea is to split your domain in three parts:
SUM(-infinity,+infinity)=SUM(-infinity,a)+SUM(a,b)+SUM(b,+infinity),
with -infinity < a < b < +infinity .
Then, by figuring out an appropriate changement of variable,
you may be able to reduce your three integrals into three finite integrals
to which you can easily apply the function exposed in the Chapter "Numerical Integration".

hth,
Jerome

Przemyslaw Sliwa wrote:
> All,
>                                                 INF
>                                                  /
> I would like to know if it is possible to calculate the integral of type  I f(x)dx using gsl. If yes can someone explain me how it is done?
>                                                 /
>                                                        -INF
> 
> Thank you for help,
> 
> Pshemek
> 
> 
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