Question

Finding period of $f$ using the functional equation $f(x) + f(x+a+b) = f(x+a) + f(x+b)$

score 271 · Answer 1 · 2017-12-25 17:00:24

271

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Finding period of $f$ using the functional equation $f(x) + f(x+a+b) = f(x+a) + f(x+b)$

Published on 25 Dec 2017 - 17:00

score 249 · Answer 2 · 2018-01-03 20:58:15

249

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Is it possible to write a sinus function as a linear combination of different frequency sinus?

Published on 03 Jan 2018 - 20:58

score 453 · Answer 3 · 2018-01-05 01:37:39

453

Views

How to show set of periods is dense in $\mathbb{R}$

Published on 05 Jan 2018 - 1:37

score 83 · Answer 4 · 2026-04-01 04:38:31

83

Views

Show that if $t : \Bbb T →\Bbb T$ is continuous, then we may write $t(θ) = pθ + P (θ)$, where $P : \Bbb R →\Bbb R$ is a $\Bbb Z$-periodic function

Published on 01 Apr 2026 - 4:38

score 113 · Answer 5 · 2018-01-07 08:23:28

113

Views

Minimum of sum of incommensurable functions

Published on 07 Jan 2018 - 8:23

score 64 · Answer 6 · 2018-01-08 18:33:53

64

Views

Boundedness of periodic functions

Published on 08 Jan 2018 - 18:33

score 659 · Answer 7 · 2026-03-30 20:52:39

659

Views

Sinusoidal Function word problems: month and temperature $T(t) = 14.9 \sin {\pi \over 6}(t-3) +13$

Published on 30 Mar 2026 - 20:52

score 8.9k · Answer 8 · 2011-11-12 19:05:55

8.9k

Views

Are sin and cos the only continuous and infinitely differentiable periodic functions we have?

Published on 12 Nov 2011 - 19:05

score 280 · Answer 9 · 2011-11-24 22:36:37

280

Views

Function with oscillating frequency?

Published on 24 Nov 2011 - 22:36

score 4.1k · Answer 10 · 2011-11-24 22:47:48

4.1k

Views

Does the phrase "instantaneous frequency" make sense?

Published on 24 Nov 2011 - 22:47

score 12.2k · Answer 11 · 2011-12-26 15:32:08

12.2k

Views

An integrable and periodic function $f(x)$ satisfies $\int_{0}^{T}f(x)dx=\int_{a}^{a+T}f(x)dx$.

Published on 26 Dec 2011 - 15:32

score 3.1k · Answer 12 · 2012-01-11 13:49:19

3.1k

Views

FFT for solving Poisson equation in 3 dimensions with periodic boundary conditions

Published on 11 Jan 2012 - 13:49

score 45.9k · Answer 13 · 2012-01-12 08:02:25

45.9k

Views

Integral of periodic function over the length of the period is the same everywhere

Published on 12 Jan 2012 - 8:02

score 61 · Answer 14 · 2012-01-22 15:18:15

61

Views

Is it okay to use the same variable to describe function periods?

Published on 22 Jan 2012 - 15:18

score 217 · Answer 15 · 2012-01-23 02:03:25

217

Views

Triangular periodic tessellation in two variables

Published on 23 Jan 2012 - 2:03

List Question

Finding period of $f$ using the functional equation $f(x) + f(x+a+b) = f(x+a) + f(x+b)$

Is it possible to write a sinus function as a linear combination of different frequency sinus?

How to show set of periods is dense in $\mathbb{R}$

Show that if $t : \Bbb T →\Bbb T$ is continuous, then we may write $t(θ) = pθ + P (θ)$, where $P : \Bbb R →\Bbb R$ is a $\Bbb Z$-periodic function

Minimum of sum of incommensurable functions

Boundedness of periodic functions

Sinusoidal Function word problems: month and temperature $T(t) = 14.9 \sin {\pi \over 6}(t-3) +13$

Are sin and cos the only continuous and infinitely differentiable periodic functions we have?

Function with oscillating frequency?

Does the phrase "instantaneous frequency" make sense?

An integrable and periodic function $f(x)$ satisfies $\int_{0}^{T}f(x)dx=\int_{a}^{a+T}f(x)dx$.

FFT for solving Poisson equation in 3 dimensions with periodic boundary conditions

Integral of periodic function over the length of the period is the same everywhere

Is it okay to use the same variable to describe function periods?

Triangular periodic tessellation in two variables

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