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Curve fitting with a custom equation

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Antonio
Antonio on 1 Nov 2012
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.

Answers (1)

Matt J
Matt J on 1 Nov 2012
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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