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Re: Fitting with a power embedded in a integration

  • To: mathgroup at
  • Subject: [mg88493] Re: Fitting with a power embedded in a integration
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at>
  • Date: Tue, 6 May 2008 06:44:36 -0400 (EDT)
  • Organization: The Open University, Milton Keynes, UK
  • References: <fvmn0b$8if$>

lynn wrote:
> Dear all,
> I don't know how to fit my data with a power embedded in
> a integration, and can't find related answer in this forum.
> This is the function I want to fit
> \!\(
> \*SubsuperscriptBox[\(\[Integral]\), \(w\), \(R\)]\(c*
> SuperscriptBox[\(x\), \(-p\)]
> FractionBox[\(x\),
> SqrtBox[\(
> \*SuperscriptBox[\(x\), \(2\)] -
> \*SuperscriptBox[\(w\), \(2\)]\)]] \[DifferentialD]x\)\)
> w is variable, R is a parameter, and c, p is parameters should
> be fitted.
> I can't find a way to simplified the power law to log form
> so that can't avoid the trouble while fit the power law.
> Thanks a lot for your help!
> Lynn


I believe you are using a version prior to 6.0, in this case you should 
use the _InputForm_ when copying an expression from a Mathematica 
notebook to an email client: select the cell(s) you want to include in 
your email, then within the *Cell* menu select either *Convert To* or 
*Display As* and choose *InputForm*. Finally, copy and paste as usual.

As posted, the expression is rendered in a weird (nonsensical) way on my 
system when copied and pasted.

-- Jean-Marc

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