How to perform and check convergences of the function in Fourier series ?

29 July 2022 0 9K Report

Dear all,

I have tried to expand the given input function (attached below) to Fourier Series . The series just approximated the function after more than 30th order harmonics. The long series is being ambiguous for my analysis. How can I find the dominant harmonics from this series? Is it necessary that the dominant frequency are the first line frequency in the series ?

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