Question

Smoothest zero-centered periodic function $f$ with $f(0) > 0$

score 75 · Answer 1 · 2021-02-02 19:40:28

75

Views

Smoothest zero-centered periodic function $f$ with $f(0) > 0$

Published on 02 Feb 2021 - 19:40

score 446 · Answer 2 · 2026-03-29 12:31:59

446

Views

If an ODE has only periodic solutions and one equilibrium point, is that equilibrium point Lyapunov stable?

Published on 29 Mar 2026 - 12:31

score 85 · Answer 3 · 2021-02-08 11:03:09

85

Views

integral of a discontinous periodic function?

Published on 08 Feb 2021 - 11:03

score 68 · Answer 4 · 2021-02-08 16:10:31

68

Views

How do I determine the frequency of $x(t) = 9\cos(2t) + 4\sin(\pi t)$

Published on 08 Feb 2021 - 16:10

score 69 · Answer 5 · 2026-03-28 12:15:49

69

Views

How to calculate the length of the negative parts of $ \cos \alpha x-\cos 2 \alpha x $?

Published on 28 Mar 2026 - 12:15

score 67 · Answer 6 · 2021-02-09 21:21:56

67

Views

Is it possible to calculate how much percent the function $\cos ax-\cos 2ax$ is positive on its periodic domain?

Published on 09 Feb 2021 - 21:21

score 510 · Answer 7 · 2021-02-12 10:35:03

510

Views

Given $f$ continuous, $T>0$ and supposed $\int_x^{x+T} f(t)dt=\int_0^T f(t)dt$, show that $f$ is periodic with period $T$

Published on 12 Feb 2021 - 10:35

score 743 · Answer 8 · 2021-02-12 20:15:41

743

Views

Why is the period of $\sec$ and $\csc 2\pi$ instead of $\pi$?

Published on 12 Feb 2021 - 20:15

score 64 · Answer 9 · 2021-02-14 20:16:10

64

Views

The period of the given function?

Published on 14 Feb 2021 - 20:16

score 82 · Answer 10 · 2021-02-16 21:17:50

82

Views

Proof of period of $\cos^{n}(ax+b)$ ((Update))

Published on 16 Feb 2021 - 21:17

score 99 · Answer 11 · 2021-02-17 08:56:22

99

Views

How many times does the line $y=\frac{1}{4} x$ cut the curve $y=\sin(x)+\cos(2x)$?

Published on 17 Feb 2021 - 8:56

score 218 · Answer 12 · 2021-02-18 14:03:34

218

Views

Sum of two Cosine functions is periodic.

Published on 18 Feb 2021 - 14:03

score 363 · Answer 13 · 2021-02-26 00:16:23

363

Views

Find a unique $2\pi$-periodic solution for a parametrical differential equation of the second order.

Published on 26 Feb 2021 - 0:16

score 593 · Answer 14 · 2026-02-23 04:21:06

593

Views

Algebraic expression for the period of $\cos (\log (x))$?

Published on 23 Feb 2026 - 4:21

score 126 · Answer 15 · 2021-03-04 23:17:06

126

Views

Polynomial such that $e^{2i\pi P(n)} \rightarrow 1$

Published on 04 Mar 2021 - 23:17

List Question

Smoothest zero-centered periodic function $f$ with $f(0) > 0$

If an ODE has only periodic solutions and one equilibrium point, is that equilibrium point Lyapunov stable?

integral of a discontinous periodic function?

How do I determine the frequency of $x(t) = 9\cos(2t) + 4\sin(\pi t)$

How to calculate the length of the negative parts of $ \cos \alpha x-\cos 2 \alpha x $?

Is it possible to calculate how much percent the function $\cos ax-\cos 2ax$ is positive on its periodic domain?

Given $f$ continuous, $T>0$ and supposed $\int_x^{x+T} f(t)dt=\int_0^T f(t)dt$, show that $f$ is periodic with period $T$

Why is the period of $\sec$ and $\csc 2\pi$ instead of $\pi$?

The period of the given function?

Proof of period of $\cos^{n}(ax+b)$ ((Update))

How many times does the line $y=\frac{1}{4} x$ cut the curve $y=\sin(x)+\cos(2x)$?

Sum of two Cosine functions is periodic.

Find a unique $2\pi$-periodic solution for a parametrical differential equation of the second order.

Algebraic expression for the period of $\cos (\log (x))$?

Polynomial such that $e^{2i\pi P(n)} \rightarrow 1$

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