Question

Find the Fourier series of $f(x) = \cos \left(\frac{x}{3}\right)$ on $-\pi \leq x \leq \pi$

score 79 · Answer 1 · 2026-04-16 08:35:44

79

Views

Find the Fourier series of $f(x) = \cos \left(\frac{x}{3}\right)$ on $-\pi \leq x \leq \pi$

Published on 16 Apr 2026 - 8:35

score 309 · Answer 2 · 2026-04-18 13:45:03

309

Views

Actual period of a Periodic Wave represented by Fourier Transform

Published on 18 Apr 2026 - 13:45

score 1.4k · Answer 3 · 2026-04-13 14:23:56

1.4k

Views

Odd and even extension (fourier series)

Published on 13 Apr 2026 - 14:23

score 569 · Answer 4 · 2026-04-14 02:08:16

569

Views

Does the Fourier series of a continuous function on $\mathbb{T} = [-\pi, \pi]$ converge pointwise or uniformly almost everywhere?

Published on 14 Apr 2026 - 2:08

score 66 · Answer 5 · 2026-04-16 11:34:00

66

Views

Show that $\sum_{n=0}^{\infty} \frac{6((2-n^2\pi^2)(-1)^n-2)}{(n\pi)^4} = \frac{1}{4}$

Published on 16 Apr 2026 - 11:34

score 20 · Answer 6 · 2026-04-12 08:02:08

20

Views

Fast Fourier Transform Series

Published on 12 Apr 2026 - 8:02

score 231 · Answer 7 · 2026-03-26 17:32:52

231

Views

Laplace Series for $\frac{\cos\phi}{\sin\theta}$

Published on 26 Mar 2026 - 17:32

score 68 · Answer 8 · 2026-04-12 06:35:28

68

Views

Trouble Gaining Intuition with How a Fourier Series' Coefficients Could Ever Converge to $0$ (w/Constant Function)

Published on 12 Apr 2026 - 6:35

score 59 · Answer 9 · 2026-04-09 07:00:57

59

Views

Trouble Understanding Exponential Function Reasoning Involving Dirichlet Kernel

Published on 09 Apr 2026 - 7:00

score 358 · Answer 10 · 2026-04-16 19:01:05

358

Views

Find Fourier series for function f(x)

Published on 16 Apr 2026 - 19:01

score 110 · Answer 11 · 2026-04-14 14:17:39

110

Views

Solving PDE with Neumann on a finite Interval

Published on 14 Apr 2026 - 14:17

score 203 · Answer 12 · 2026-04-16 23:37:58

203

Views

Fourier series of $f(x) = \frac{1-a^2}{1+a^2-2a \cos x}$

Published on 16 Apr 2026 - 23:37

score 60 · Answer 13 · 2026-04-09 12:16:03

60

Views

Problem about function equation

Published on 09 Apr 2026 - 12:16

score 89 · Answer 14 · 2026-04-16 11:57:26

89

Views

Find the $2\pi$-periodic $C^1$ function from the given Fourier coefficients

Published on 16 Apr 2026 - 11:57

score 118 · Answer 15 · 2026-04-08 07:08:59

118

Views

Solving Laplace's equation for PDE problem: Contradiction Between Fourier Analysis and Instructor's Solution? Confusion with How to Proceed.

Published on 08 Apr 2026 - 7:08

List Question

Find the Fourier series of $f(x) = \cos \left(\frac{x}{3}\right)$ on $-\pi \leq x \leq \pi$

Actual period of a Periodic Wave represented by Fourier Transform

Odd and even extension (fourier series)

Does the Fourier series of a continuous function on $\mathbb{T} = [-\pi, \pi]$ converge pointwise or uniformly almost everywhere?

Show that $\sum_{n=0}^{\infty} \frac{6((2-n^2\pi^2)(-1)^n-2)}{(n\pi)^4} = \frac{1}{4}$

Fast Fourier Transform Series

Laplace Series for $\frac{\cos\phi}{\sin\theta}$

Trouble Gaining Intuition with How a Fourier Series' Coefficients Could Ever Converge to $0$ (w/Constant Function)

Trouble Understanding Exponential Function Reasoning Involving Dirichlet Kernel

Find Fourier series for function f(x)

Solving PDE with Neumann on a finite Interval

Fourier series of $f(x) = \frac{1-a^2}{1+a^2-2a \cos x}$

Problem about function equation

Find the $2\pi$-periodic $C^1$ function from the given Fourier coefficients

Solving Laplace's equation for PDE problem: Contradiction Between Fourier Analysis and Instructor's Solution? Confusion with How to Proceed.

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