Question

Why is $x(t)$ not periodic but $x[n]$ is?

score 455 · Answer 1 · 2020-08-16 23:48:13

455

Views

Why is $x(t)$ not periodic but $x[n]$ is?

Published on 16 Aug 2020 - 23:48

score 25 · Answer 2 · 2020-08-18 09:00:36

25

Views

Period of N systems each with a period p

Published on 18 Aug 2020 - 9:00

score 56 · Answer 3 · 2026-03-29 09:11:46

56

Views

Can we exactly calculate the sum $S=\sum\limits_{n=1}^{N} e^{2ib\cos n\theta} e^{-in\theta}$?

Published on 29 Mar 2026 - 9:11

score 34 · Answer 4 · 2020-08-22 20:38:25

34

Views

Algebraic manipulation including Dirichlet-kernel and $2\pi$-periodic function

Published on 22 Aug 2020 - 20:38

score 608 · Answer 5 · 2020-08-24 08:19:02

608

Views

A periodic function with no fundamental period and continous at one point is constant.

Published on 24 Aug 2020 - 8:19

score 417 · Answer 6 · 2026-03-29 20:55:16

417

Views

distorted sine function

Published on 29 Mar 2026 - 20:55

score 48 · Answer 7 · 2026-03-28 09:33:35

48

Views

Sturm-Liouville problem: How to calculate the eigenfunctions of a periodic system?

Published on 28 Mar 2026 - 9:33

score 455 · Answer 8 · 2020-09-07 08:21:12

455

Views

Finding the period of sum of two periodic functions.

Published on 07 Sep 2020 - 8:21

score 159 · Answer 9 · 2020-09-07 16:52:14

159

Views

How to solve a simple first-order BVP? When do solutions exist?

Published on 07 Sep 2020 - 16:52

score 123 · Answer 10 · 2020-09-10 08:38:36

123

Views

What is the difference between $x$-component of the period and $y$-component of the period in a position vector

Published on 10 Sep 2020 - 8:38

score 121 · Answer 11 · 2020-09-11 07:27:06

121

Views

"Ramp up" phase for periodic function

Published on 11 Sep 2020 - 7:27

score 81 · Answer 12 · 2020-09-13 13:27:43

81

Views

prove that there is only one a, such: $y'(x)=y(x)^3+\sin(x);y(0)=a$ and y(x) is a unique periodic solution

Published on 13 Sep 2020 - 13:27

score 63 · Answer 13 · 2026-04-01 11:04:41

63

Views

what is the range of independent variable of a sinusoid?

Published on 01 Apr 2026 - 11:04

score 919 · Answer 14 · 2020-09-17 19:52:06

919

Views

Show that there exists $x_0$ such that $f(x_0+2 \pi)=f(x_0)$

Published on 17 Sep 2020 - 19:52

score 66 · Answer 15 · 2020-09-17 21:24:28

66

Views

If a function from $\mathbb{R}$ to $\mathbb{R}$ is periodic with any $P\in\mathbb{R}$, is it necessarily constant?

Published on 17 Sep 2020 - 21:24

List Question

Why is $x(t)$ not periodic but $x[n]$ is?

Period of N systems each with a period p

Can we exactly calculate the sum $S=\sum\limits_{n=1}^{N} e^{2ib\cos n\theta} e^{-in\theta}$?

Algebraic manipulation including Dirichlet-kernel and $2\pi$-periodic function

A periodic function with no fundamental period and continous at one point is constant.

distorted sine function

Sturm-Liouville problem: How to calculate the eigenfunctions of a periodic system?

Finding the period of sum of two periodic functions.

How to solve a simple first-order BVP? When do solutions exist?

What is the difference between $x$-component of the period and $y$-component of the period in a position vector

"Ramp up" phase for periodic function

prove that there is only one a, such: $y'(x)=y(x)^3+\sin(x);y(0)=a$ and y(x) is a unique periodic solution

what is the range of independent variable of a sinusoid?

Show that there exists $x_0$ such that $f(x_0+2 \pi)=f(x_0)$

If a function from $\mathbb{R}$ to $\mathbb{R}$ is periodic with any $P\in\mathbb{R}$, is it necessarily constant?

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