curve fitting toolbox error

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Jernej
Jernej 2014 年 6 月 2 日
編集済み: Matt J 2014 年 6 月 2 日
I am trying to fit data to this equation b*(coth(x/a)-a/x) using the curve fitting toolbox. I get this error NaN computed by model function, fitting cannot continue. Try using or tightening upper and lower bounds on coefficients. Here is the screenshot: https://www.dropbox.com/s/2bgx89frrx2pjbo/b_h.jpg

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Matt J
Matt J 2014 年 6 月 2 日
編集済み: Matt J 2014 年 6 月 2 日
You must prevent the search from including a=0. Otherwise, you will have division by 0 operations x/a.

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