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 crate fitting function

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Swampyrain Posted - 09/23/2012 : 09:00:38 AM
Origin Ver.8.0 and Service Release (Select Help-->About Origin):
Operating System: XP

Hello everyone! Can anybody help me?
I need to create y=A(exp(B*x)-1) fitting function, where A and B will be automatched parameters(sorry, my english isn't very good, maybe it is called autosorted parameters). help me plz as soon as possible!
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Swampyrain Posted - 09/24/2012 : 2:42:38 PM
I mean I need these parameters to be autocalculated. for example I have initial value for B=39.4 and i need parameter A to be counted by origin to fit my experimental points
greg Posted - 09/24/2012 : 10:06:54 AM
I don't know what you mean by automatched or autosorted, but you should be able to define this well-behaved function with just about any initial values you like and it should fit. Possibly you need constraints on the parameters? You could enable constraints and use something like
A > 2 * B
or
A < B

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