I have to fit more than a thousand vectors of data to biexponential curves, one curve fitting per vector. I was using de function "fit" to this purpose, but it was taking too long. I have tried to look for different ways to do the curve fitting and I have found some useful functions, and I would like to know which are the differences between them, because all of them seem similar to me. Which function is faster? The functions are:
fitnlmnlinfitlsqnonlinlsqcurvefit
Thanks in advance
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