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 Fitting an implicit equation		  New Topic  Reply to Topic
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gpv77bo

Italy
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Posted - 02/08/2008 :  06:47:06 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Version (Select Help-->About Origin): 7.5 SR6
Operating System: Windows XP Home

Hi,

i need to fit experimental data (X, Y) with an implicit equation, i.e.

Y = aB((X-AY)^3) * exp(-bB/(X-AY)),

where
a, b are constants,
A, B parameters to be fit

Could anyone help me with some smart advices?

Thanks in advance,

Giulio

suikou

Brazil
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Posted - 02/27/2008 :  09:43:42 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
For nonlinear regression of an implicit function, you are suggested to try a software package named 1stOpt or Auto2Fit. Origin seems no way to handle such problem.
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