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Questions on the use of Mathematica to construct models for approximating empirical data.

0
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2answers
I have performed a nonlinear fit onto a set of data according to the form $a+b\cos(2\pi x)+c\sin(2\pi x)+d\cos(4\pi x)+e\sin(4\pi x)$. How do I access the best fit parameters $a,b,c,d,e$, store them …
asked Jun 4 by Houndbobsaw
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1answer
I have a slightly complicated periodic function of one variable t, say g[t]. I want to do a least squares fit of that function into the form A*Cos[Ω*t]+B*Cos[2Ω*t], and figure out the values of param …
asked Apr 30 by Houndbobsaw
1
vote
1answer
I've fit my set of data to a function of the form: $a*\cos(2\pi t)+b*\sin(2\pi t)+c*\cos(4\pi t)+d*\sin(4\pi t)+e$ with a nonlinear model fit. The parameters $a,b,c,d,e$ have errors in it that Mathema …
asked Aug 15 by Houndbobsaw
1
vote
1answer
. Extract the phase1, phase2 fitting parameters which I've done, so assume phase1, phase2 are constants in the following. nlm2 = NonlinearModelFit[Data, a*Cos[2Pi*x]+(-a*Tan[phase1 + AddedPhase])*Sin[2Pi …
asked Jun 18 by Houndbobsaw