Curve fitting with a custom equation

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Antonio 2012-11-1

Hi! I have a set of points and I'd like to make a curvefitting using this custom equation:

y=(exp(a*x))*(1/((((20000/(1-0.5^2)).^b)).*0.7));

How can I do this with the built-in toolbox Curve fitting (even without it!)?

Thanking you for your attention, I'm looking forward for your answers.

Matt J 2012-11-1

If you have neglgible noise in your data, you can take the log of both sides and convert your model into a linear one

logy=a*x+b*log(constants)

Then you can just use a linear solver (backslash, linsolve, etc...)

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