Question

Extracting two balls with the same color vs distinct color

score 157 · Answer 1 · 2026-04-13 20:59:50

157

Views

Extracting two balls with the same color vs distinct color

Published on 13 Apr 2026 - 20:59

score 39 · Answer 2 · 2026-04-08 16:22:41

39

Views

Proof of an inequality involving complex analysis

Published on 08 Apr 2026 - 16:22

score 365 · Answer 3 · 2026-04-13 20:33:21

365

Views

Maximum number of unit vectors with bounded pairwise dot products

Published on 13 Apr 2026 - 20:33

score 66 · Answer 4 · 2026-04-15 17:14:08

66

Views

Can I apply different transformations to each side of this inequality?

Published on 15 Apr 2026 - 17:14

score 111 · Answer 5 · 2026-04-13 01:02:32

111

Views

How to derive that $|y-z| - |x-z| \le |x-y|$

Published on 13 Apr 2026 - 1:02

score 159 · Answer 6 · 2026-03-24 23:44:57

159

Views

Show that $a^{2014}+b^{2014}\geq a^{2013}+b^{2013} $.

Published on 24 Mar 2026 - 23:44

score 1.4k · Answer 7 · 2026-04-15 20:23:46

1.4k

Views

Find the set of the real numbers $x$ satisfying the inequalities $|x+4|<|2x-1|$ and $|x|+|x+1|<3$

Published on 15 Apr 2026 - 20:23

score 213 · Answer 8 · 2026-04-15 17:13:53

213

Views

Find the set of the real numbers $x$ satisfying the given inequality $\frac{1}{x-4}<\frac{5}{x+1}$

Published on 15 Apr 2026 - 17:13

score 233 · Answer 9 · 2026-03-25 09:29:57

233

Views

$| \sin x| > \frac{\sqrt{2-\sqrt{2}}}{2}$ iff $1/8< \{ \frac{x}{\pi}\} < 7/8$ where $\{x\}$ is the fractional part of $x$

Published on 25 Mar 2026 - 9:29

score 2.9k · Answer 10 · 2026-04-17 08:53:05

2.9k

Views

Maximizing $ (4a-3b)^2+(5b-4c)^2+(3c-5a)^2$, such that $a^2+b^2+c^2=1 $

Published on 17 Apr 2026 - 8:53

score 108 · Answer 11 · 2026-04-14 05:44:18

108

Views

Linear version of Gronwall's inequality, proof

Published on 14 Apr 2026 - 5:44

score 45 · Answer 12 · 2026-04-16 15:55:05

45

Views

Prove $(1+\frac{1}{x})^{x+a}>e\ \forall x>0$ when $a\geq1/2$

Published on 16 Apr 2026 - 15:55

score 21 · Answer 13 · 2026-04-08 23:27:17

21

Views

Inequation / binomial formula

Published on 08 Apr 2026 - 23:27

score 92 · Answer 14 · 2026-04-15 20:23:33

92

Views

Trouble showing $a_n=\frac{\sin \frac{n\pi}{3n+1}}{\sqrt{n+3}}$ is monotonically decreasing

Published on 15 Apr 2026 - 20:23

score 103 · Answer 15 · 2026-04-13 07:30:08

103

Views

Separable Hilbert Space

Published on 13 Apr 2026 - 7:30

List Question

Extracting two balls with the same color vs distinct color

Proof of an inequality involving complex analysis

Maximum number of unit vectors with bounded pairwise dot products

Can I apply different transformations to each side of this inequality?

How to derive that $|y-z| - |x-z| \le |x-y|$

Show that $a^{2014}+b^{2014}\geq a^{2013}+b^{2013} $.

Find the set of the real numbers $x$ satisfying the inequalities $|x+4|<|2x-1|$ and $|x|+|x+1|<3$

Find the set of the real numbers $x$ satisfying the given inequality $\frac{1}{x-4}<\frac{5}{x+1}$

$| \sin x| > \frac{\sqrt{2-\sqrt{2}}}{2}$ iff $1/8< \{ \frac{x}{\pi}\} < 7/8$ where $\{x\}$ is the fractional part of $x$

Maximizing $ (4a-3b)^2+(5b-4c)^2+(3c-5a)^2$, such that $a^2+b^2+c^2=1 $

Linear version of Gronwall's inequality, proof

Prove $(1+\frac{1}{x})^{x+a}>e\ \forall x>0$ when $a\geq1/2$

Inequation / binomial formula

Trouble showing $a_n=\frac{\sin \frac{n\pi}{3n+1}}{\sqrt{n+3}}$ is monotonically decreasing

Separable Hilbert Space

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