List questions from fourier-series

Published on 29 Mar 2026 - 3:36

131

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Find all function such that : $f(x+1)=x^{3}-f(x-1)$.

Published on 30 Mar 2026 - 6:46

49

Views

Difference between $n$-th partial sums of Fourier series

Published on 09 Apr 2020 - 19:25

60

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Trying to see if there is correlation between the Corona-Virus transmission rate per day in NY city (COVID-19) and the humidity that day

Published on 28 Mar 2026 - 3:03

62

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Finding which function has this Fourier series

Published on 11 Apr 2020 - 3:00

45

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Calculate the integral using the Fourier coefficients

Published on 11 Apr 2020 - 16:06

43

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How to select the limits of integration for fourier coeffecients

Published on 12 Apr 2020 - 2:10

56

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Construct the continuous function whose Fourier series diverges at 0.

Published on 30 Mar 2026 - 4:44

92

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How to extract the Fourier series components without calculus?

Published on 12 Apr 2020 - 20:33

207

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Fourier series, inner products, and norms

Published on 14 Apr 2020 - 5:05

208

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Showing that $\int_{-\infty}^{\infty}\frac{x^2}{(x^2+a^2)(x^2+b^2)}dx=\frac{\pi}{a+b}$ via Fourier Transform

Published on 01 Apr 2026 - 14:07

48

Views

How a fixed function can influence orthogonality

Published on 16 Apr 2020 - 3:42

1.2k

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Express function as Fourier series expansion

Published on 01 Apr 2026 - 14:00

49

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Let $f\in L^{\infty}$, its that true $Pf\in H^{\infty}$?

Published on 25 Mar 2026 - 5:09

37

Views

(Non-trivial) Fourier series coefficients

Published on 01 Apr 2026 - 17:26

List Question

What's the spectrum of $\cos(\sum_{n} A_n\cos(n*\Delta\omega t+n\phi)$?

Find all function such that : $f(x+1)=x^{3}-f(x-1)$.

Difference between $n$-th partial sums of Fourier series

Trying to see if there is correlation between the Corona-Virus transmission rate per day in NY city (COVID-19) and the humidity that day

Finding which function has this Fourier series

Calculate the integral using the Fourier coefficients

How to select the limits of integration for fourier coeffecients

Construct the continuous function whose Fourier series diverges at 0.

How to extract the Fourier series components without calculus?

Fourier series, inner products, and norms

Showing that $\int_{-\infty}^{\infty}\frac{x^2}{(x^2+a^2)(x^2+b^2)}dx=\frac{\pi}{a+b}$ via Fourier Transform

How a fixed function can influence orthogonality

Express function as Fourier series expansion

Let $f\in L^{\infty}$, its that true $Pf\in H^{\infty}$?

(Non-trivial) Fourier series coefficients

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