2.6.2.43 Trigonometric Fourier series
condition: Expand the function into a Fourier series and plot the sum of the series. Write out the Fourier series for \( x=0 \) and calculate its sum. \[ f(x)=5 x+|x|-3 ; \quad-2
Trigonometric Fourier series - calculation of Fourier coefficients, expansion of functions in cosines and sines, plotting graphs of the sum of the Fourier series using the Dirichlet theorem, as well as graphs of partial sums.