Question

Prove that there exist always c s.t. $x(t)(y(t)+1)\leq c x(t)y(t)$ or give a counter example..

score 41 · Answer 1 · 2026-04-02 03:17:55

41

Views

Prove that there exist always c s.t. $x(t)(y(t)+1)\leq c x(t)y(t)$ or give a counter example..

Published on 02 Apr 2026 - 3:17

score 48 · Answer 2 · 2018-04-02 13:14:03

48

Views

Prove or disprove the following

Published on 02 Apr 2018 - 13:14

score 51 · Answer 3 · 2018-04-03 04:03:44

51

Views

The cardinality of a set of increasing rational sequences.

Published on 03 Apr 2018 - 4:03

score 57 · Answer 4 · 2026-03-25 06:04:02

57

Views

Prove that the following function $f(X)=XX^{t}$ is differentiable

Published on 25 Mar 2026 - 6:04

score 221 · Answer 5 · 2026-04-10 06:48:57

221

Views

What does "monotone functions are converging to a continuous limit" mean?

Published on 10 Apr 2026 - 6:48

score 54 · Answer 6 · 2026-03-27 23:38:35

54

Views

Interpret this notation (ODE)

Published on 27 Mar 2026 - 23:38

score 150 · Answer 7 · 2018-04-03 10:45:25

150

Views

Number of loops in a continuous paths

Published on 03 Apr 2018 - 10:45

score 188 · Answer 8 · 2026-04-11 02:54:37

188

Views

beginning of the proof of fundamental solution of Poisson's equation - Evan's PDE

Published on 11 Apr 2026 - 2:54

score 31 · Answer 9 · 2026-03-25 11:10:05

31

Views

Calulating the orthogonal complement of the sp(1,-1,1) and the second complement.

Published on 25 Mar 2026 - 11:10

score 31 · Answer 10 · 2018-04-03 15:36:36

31

Views

Algebraic indices in the sigma symbol

Published on 03 Apr 2018 - 15:36

score 374 · Answer 11 · 2026-04-11 02:32:11

374

Views

Property of a recursive integer sequence

Published on 11 Apr 2026 - 2:32

score 123 · Answer 12 · 2018-04-03 19:44:35

123

Views

$f(x+y)=f(x) \times f(y)$, $f$ taking values in $[0,1]$

Published on 03 Apr 2018 - 19:44

score 82 · Answer 13 · 2026-04-03 23:06:00

Let $x_1, x_2,\dots, x_n$ be an arrangement of the numbers $1, 2,\dots, n$. Show that if n is odd, then $(x_1 − 1)(x_2 − 2)\dots(x_n − n)$ is even.

score 48 · Answer 14 · 2026-03-31 16:56:39

48

Views

Show that for values of $y \geq 1$, the equation $y^2$cos $x-e^x = 0$ has a solution for $x$ lying in the interval $[0, \pi/2)$.

Published on 31 Mar 2026 - 16:56

score 256 · Answer 15 · 2026-03-31 16:53:18

256

Views

Proving a continuous function on a closed interval that never repeats a value is strictly increasing

Published on 31 Mar 2026 - 16:53

List Question

Prove that there exist always c s.t. $x(t)(y(t)+1)\leq c x(t)y(t)$ or give a counter example..

Prove or disprove the following

The cardinality of a set of increasing rational sequences.

Prove that the following function $f(X)=XX^{t}$ is differentiable

What does "monotone functions are converging to a continuous limit" mean?

Interpret this notation (ODE)

Number of loops in a continuous paths

beginning of the proof of fundamental solution of Poisson's equation - Evan's PDE

Calulating the orthogonal complement of the sp(1,-1,1) and the second complement.

Algebraic indices in the sigma symbol

Property of a recursive integer sequence

$f(x+y)=f(x) \times f(y)$, $f$ taking values in $[0,1]$

Let $x_1, x_2,\dots, x_n$ be an arrangement of the numbers $1, 2,\dots, n$. Show that if n is odd, then $(x_1 − 1)(x_2 − 2)\dots(x_n − n)$ is even.

Show that for values of $y \geq 1$, the equation $y^2$cos $x-e^x = 0$ has a solution for $x$ lying in the interval $[0, \pi/2)$.

Proving a continuous function on a closed interval that never repeats a value is strictly increasing

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