List questions from fourier-series

Published on 12 Apr 2026 - 12:16

668

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Expansion in sine Fourier series

Published on 12 Apr 2026 - 12:35

211

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Question on Fourier series $\sum_{n=1}^\infty a_n \sin ( \pi nx) = f(x)$

Published on 15 Apr 2026 - 0:09

1k

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How can I proved, that $\left\{\sqrt{\tfrac{2}{\pi}}\sin(kx):k\in\mathbb{N}\right\}$ is an orthonormal basis of $L^2[0,\pi]$?

Published on 15 Apr 2026 - 19:27

458

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Laplace equation with weird boundary condition

Published on 12 Apr 2026 - 1:07

125.1k

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How does knowing a function as even or odd help in integration ??

Published on 11 Apr 2026 - 12:19

1.5k

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Calculating $a_0$ in Fourier Series

Published on 12 Apr 2026 - 16:56

180

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Fourier series for $[x]-x+\frac{1}{2}$

Published on 14 Apr 2026 - 12:23

79

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Can we estimate the lower bound in this way?

Published on 12 Apr 2026 - 12:03

35

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Trouble with fourier coefficients

Published on 24 Apr 2026 - 11:20

8.6k

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What is the Fourier transform of spherical harmonics?

Published on 26 Mar 2026 - 9:42

1.7k

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Some doubts regarding half range cosine series.

Published on 11 Apr 2026 - 19:42

38

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Am I understanding this integration right?

Published on 11 Apr 2026 - 10:49

4.7k

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The Fourier series of a continuously differentiable function converges absolutely

Published on 13 Apr 2026 - 20:03

1.2k

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Complex form of Fourier Series

Published on 14 Apr 2026 - 12:25

List Question

Determine coefficients of a Fourier series

Expansion in sine Fourier series

Question on Fourier series $\sum_{n=1}^\infty a_n \sin ( \pi nx) = f(x)$

How can I proved, that $\left\{\sqrt{\tfrac{2}{\pi}}\sin(kx):k\in\mathbb{N}\right\}$ is an orthonormal basis of $L^2[0,\pi]$?

Laplace equation with weird boundary condition

How does knowing a function as even or odd help in integration ??

Calculating $a_0$ in Fourier Series

Fourier series for $[x]-x+\frac{1}{2}$

Can we estimate the lower bound in this way?

Trouble with fourier coefficients

What is the Fourier transform of spherical harmonics?

Some doubts regarding half range cosine series.

Am I understanding this integration right?

The Fourier series of a continuously differentiable function converges absolutely

Complex form of Fourier Series

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