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FindFit & restricting fitting parameter

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  • Subject: [mg55450] FindFit & restricting fitting parameter
  • From: Laurent Feuz <laurent.feuz at>
  • Date: Thu, 24 Mar 2005 03:41:49 -0500 (EST)
  • Organization: Swiss Federal Institute of Technology (ETHZ)
  • Sender: owner-wri-mathgroup at


If I want to fit some data using:

output = FindFit[data,
      Izero*(1 + 1/(xiPEG^2*q^2)), {{Izero, 0.12}, {xiPEG, 10}}, q]

I can assign a starting value to my parameters (like 0.12 for Izero in 
the above case), but can I also restrict its value to a certain range 
(like 0.10<Izero<0.14)?

Thanks for any hints!

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