Fitting by Fourier series and their coefficient
140395
Fit data with linear combinations of Cos and Sin
97374
Difference between Fitting Algorithms
5167
Finding the limit that involves Fourier coefficients,
119447
Scaling property of  Fourier series and Fourier Transform
69207
Approximating the locations of the extrema of the sinc function
97375
efficient and accurate approximation of error function
88097
Fourier series for $f(x)=(\pi -x)/2$
116608
Finding a polynomial fit to a set of data
10329
Algorithm for minimization of sum of squares in regression packages
54555
Workarounds for a possible bug in the linearity of FourierTransform
4956
Connection between Fourier transform and Taylor series
95041
What are some common issues with fitting functions to data?
41946
Find the Fourier transform of the absolute value of a function, given its Fourier transform
25971
Fitting piecewise functions
79132
Fourier transform of modified Bessel function of the second kind
137289
Applying Fourier transform to a gaussian
69347
Fitting Methods in Arima