NonlinearModelFit gives imaginary numbers
70370
Using FindFit to fit $a\,b^t$: how to avoid introducing complex numbers?
36464
How to interpret coefficients from a polynomial model fit?
107479
solve initial value problem ivp
79682
How to plot an implicit function?
9905
Why is the approximation of Hessian$= J^TJ$ reasonable?
32776
DSolve gives complex function although the solution is a real one
28514
Does FindFit support complex numbers or doesn't it?
110461
Fitting data without an equation
71347
Trying to Plot Phase Plane of Nonlinear system
141178
Fitting data to a circle with FindFit
28221
Numerical Fourier transform of a complicated function
131814
Integral with differential is purely imaginary
33518
An error formula for linearization
109331
Evaluating Real and Imaginary parts in a dispersion equation via ContourPlot
18254
Is R-squared truly an invalid metric for non-linear models?
114701
Determining best fitting curve fitting function out of linear, exponential, and logarithmic functions
60069
Orthogonal parametrization