Question

Is the professor wrong? Simple ODE question

score 131 · Answer 1 · 2026-05-05 13:31:43

131

Views

Is the professor wrong? Simple ODE question

Published on 05 May 2026 - 13:31

score 798 · Answer 2 · 2026-05-07 07:38:56

798

Views

The system $x' = h(y), \space y' = ay + g(x)$ has no periodic solutions

Published on 07 May 2026 - 7:38

score 127 · Answer 3 · 2026-05-07 19:18:27

127

Views

Show that a periodic function $f(t)$ with period $T$ can be written as $ f(t) = f_T (t) \star \frac{1}{T} \text{comb}\bigg(\frac{t}{T}\bigg) $

Published on 07 May 2026 - 19:18

score 756 · Answer 4 · 2026-05-07 12:44:55

756

Views

Is $x(t) = \sin(3t) + \cos\left({2\over3}t\right) + \cos(\pi t)$ periodic?

Published on 07 May 2026 - 12:44

score 99 · Answer 5 · 2026-05-07 16:53:56

99

Views

To show $\int_{a}^{a+T} f(x)dx$ is independant in $a$

Published on 07 May 2026 - 16:53

score 87 · Answer 6 · 2026-04-29 12:24:26

87

Views

Is the function $f(t)=\sin(\omega_0 t+\phi_0(t))$ periodic?

Published on 29 Apr 2026 - 12:24

score 179 · Answer 7 · 2026-04-29 12:24:17

179

Views

Periodic function notation, need help with a fundamental concept

Published on 29 Apr 2026 - 12:24

score 242 · Answer 8 · 2026-04-29 12:24:32

242

Views

Time dependent differential equation system with periodicity

Published on 29 Apr 2026 - 12:24

score 117 · Answer 9 · 2026-05-10 11:35:39

117

Views

Let $f: \mathbb{R} \to \mathbb{R}$ and $\exists \ \ b \in \mathbb{R} : f(x+b)=\sqrt{f(x)-f^2(x)}+\frac{1}{2}$

Published on 10 May 2026 - 11:35

score 290 · Answer 10 · 2026-04-29 12:24:01

290

Views

Compute the period of this function $f(x)=7+3\cos{(\pi x)}-8\sin{(\pi x)}+4\cos{(2\pi x)}-6\sin{(2\pi x)}$

Published on 29 Apr 2026 - 12:24

score 407 · Answer 11 · 2026-05-07 10:07:48

407

Views

If $f$ is continuous with irrational period $\xi$ and $\int_0^\xi f(x)\,dx = 0$, is it possible that $f(1)+f(2)+f(3)+\cdots=\infty$?

Published on 07 May 2026 - 10:07

score 194 · Answer 12 · 2026-05-07 07:43:07

194

Views

How to prove that a complex function is not analytic in a rectangle?

Published on 07 May 2026 - 7:43

score 52 · Answer 13 · 2026-05-10 12:16:15

52

Views

How can I find period of the function $\cot(\sqrt{\frac xb})$?

Published on 10 May 2026 - 12:16

score 190 · Answer 14 · 2026-05-10 12:13:25

190

Views

periodicity of a sinusoidal function

Published on 10 May 2026 - 12:13

score 75 · Answer 15 · 2026-05-10 12:17:51

75

Views

Periodicity of $f$ such that $ f(x+2)=f(x-1)f(x+5)$

Published on 10 May 2026 - 12:17

List Question

Is the professor wrong? Simple ODE question

The system $x' = h(y), \space y' = ay + g(x)$ has no periodic solutions

Show that a periodic function $f(t)$ with period $T$ can be written as $ f(t) = f_T (t) \star \frac{1}{T} \text{comb}\bigg(\frac{t}{T}\bigg) $

Is $x(t) = \sin(3t) + \cos\left({2\over3}t\right) + \cos(\pi t)$ periodic?

To show $\int_{a}^{a+T} f(x)dx$ is independant in $a$

Is the function $f(t)=\sin(\omega_0 t+\phi_0(t))$ periodic?

Periodic function notation, need help with a fundamental concept

Time dependent differential equation system with periodicity

Let $f: \mathbb{R} \to \mathbb{R}$ and $\exists \ \ b \in \mathbb{R} : f(x+b)=\sqrt{f(x)-f^2(x)}+\frac{1}{2}$

Compute the period of this function $f(x)=7+3\cos{(\pi x)}-8\sin{(\pi x)}+4\cos{(2\pi x)}-6\sin{(2\pi x)}$

If $f$ is continuous with irrational period $\xi$ and $\int_0^\xi f(x)\,dx = 0$, is it possible that $f(1)+f(2)+f(3)+\cdots=\infty$?

How to prove that a complex function is not analytic in a rectangle?

How can I find period of the function $\cot(\sqrt{\frac xb})$?

periodicity of a sinusoidal function

Periodicity of $f$ such that $ f(x+2)=f(x-1)f(x+5)$

Trending Questions

Popular # Hahtags

Popular Questions