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Used to mark questions about nonlinear differential equations, `NonlinearModelFit`, and related to nonlinear dynamics.

2 votes
2 answers
183 views

Fitting on Diffraction Pattern, NonlinearModelFit, Complex Infinity

I'm trying to fit the function $f(x;a,b,s)=a\left( \frac{\sin\left(b \sin(s x) \right)}{b \sin(s x)} \right)^2 $ on the data below using NonlinearModelFit but I'm getting an error message: Indetermina …
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