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Re: [Help-gsl] Integration involving Bessel Function
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From: |
Brian Gough |
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Subject: |
Re: [Help-gsl] Integration involving Bessel Function |
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Date: |
Fri, 04 Jun 2010 11:40:47 -0400 |
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User-agent: |
Wanderlust/2.15.6 (Almost Unreal) Emacs/23.2 Mule/6.0 (HANACHIRUSATO) |
At Wed, 2 Jun 2010 06:33:16 -0400,
address@hidden wrote:
> I am a beginer with gsl and I am trying to do an integration of the form:
>
> \int_0^\infty [ x J0(x) F(x) ].
>
> J0(x) being oscillatory makes the integrtal +ve and -ve within its
> consecutive zero's. Form of F(x) is such that the overall integrand is a
> decaying function of x.
>
> How to handle this type of integration using gsl.
>
> I tried using "gsl_integration_qag", but its not giving the correct results.
>
Did you try gsl_integration_qagiu (infinite upper limit)?