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MathGroup Archive 2005

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Using InterpolatingFunction in Argument of NIntegrate

  • To: mathgroup at smc.vnet.net
  • Subject: [mg57783] Using InterpolatingFunction in Argument of NIntegrate
  • From: Iggy <blah at blah.com>
  • Date: Wed, 8 Jun 2005 03:21:32 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

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


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