Re: Using InterpolatingFunction in Argument of NIntegrate
- To: mathgroup at smc.vnet.net
- Subject: [mg57806] Re: Using InterpolatingFunction in Argument of NIntegrate
- From: dh <dh at metrohm.ch>
- Date: Thu, 9 Jun 2005 05:17:39 -0400 (EDT)
- References: <d8691p$c70$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi Iggy,
what you describe should work. I guess you have a syntactical error.
E.g. you have to write g[f[x]]] instead of: g(f(x)
If this does not help, you have to be more specific.
sincerely, Daniel
Iggy wrote:
> Hi,
>
> I am solving numberically an ODE and outputing the results into a function
> f(x). This f(x) is some InterpolatingFunction.
>
> I would like to then use f(x) in a call to NIntegrate in a way such as:
>
> NIntegrate[g(f(x),{x,0,1}]
>
> However I get an integrand not numerical error. I can easily Plot g(f(x))
> and if I replace f(x) with some function like x^2 everything works too.
>
> How can I get around this?
>
> Thanks,
>
> Iggy
>