Question

Inequality with two sums

score 133 · Answer 1 · 2026-04-11 16:05:04

133

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Inequality with two sums

Published on 11 Apr 2026 - 16:05

score 56 · Answer 2 · 2026-04-09 11:36:39

56

Views

Understanding why an inequality holds in a proof

Published on 09 Apr 2026 - 11:36

score 4.3k · Answer 3 · 2026-04-13 01:51:32

4.3k

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How to prove that adding $n$ to the numerator and denominator will move the resultant fraction close to $1$?

Published on 13 Apr 2026 - 1:51

score 64 · Answer 4 · 2026-04-19 21:16:05

64

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Inequality using lengths of the edges of a triangle

Published on 19 Apr 2026 - 21:16

score 126 · Answer 5 · 2026-03-25 06:12:00

126

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Show that $(a^2+3)(b^2+3)(c^2+3)(d^2+3)\geq 256$.

Published on 25 Mar 2026 - 6:12

score 148 · Answer 6 · 2026-04-16 21:08:26

148

Views

$f^{(n)}\leq1+|f|+|f'|+\dots+|f^{(n-1)}|$ implies that $f$ has an upper bound.

Published on 16 Apr 2026 - 21:08

score 46 · Answer 7 · 2026-04-11 17:04:37

46

Views

Inequality for finite product

Published on 11 Apr 2026 - 17:04

score 413 · Answer 8 · 2026-04-15 11:31:45

413

Views

Prove by induction that $\sum_{i=1}^n \frac{1}{\sqrt i} > \sqrt n$ for all integers $n \ge 2$

Published on 15 Apr 2026 - 11:31

score 105 · Answer 9 · 2026-04-15 17:23:03

105

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What is the interval of $A=\frac{2x-6}{x-4}$ provided that $5\lt x\lt 9$?

Published on 15 Apr 2026 - 17:23

score 45 · Answer 10 · 2026-04-14 02:06:22

45

Views

$1$-norm on $\mathbb R^p\times\mathbb R^p\times\dots\times \mathbb R^p$

Published on 14 Apr 2026 - 2:06

score 71 · Answer 11 · 2026-04-16 13:57:46

71

Views

Solving $\frac{2}{x} < 3$?

Published on 16 Apr 2026 - 13:57

score 98 · Answer 12 · 2026-04-16 01:36:36

98

Views

When $\left(2+\frac{x}{y}+\frac{y}{x}\right)^x$ is larger that $(1+x)^{1+x}$?

Published on 16 Apr 2026 - 1:36

score 262 · Answer 13 · 2026-04-11 08:54:45

262

Views

Matrix inequality with square products

Published on 11 Apr 2026 - 8:54

score 86 · Answer 14 · 2026-04-11 15:42:08

86

Views

Finding the upper bound of a 3-variable function.(inequality)

Published on 11 Apr 2026 - 15:42

score 256 · Answer 15 · 2026-04-16 18:07:16

256

Views

$\frac{1}{3}\sum_{cyc}\frac{1}{\sqrt{1+a}}\ge\frac{1}{\sqrt{1+\sqrt[3]{abc}}}$ if $\;a, b, c\;$ are positive reals s.t. $abc\ge2^9$

Published on 16 Apr 2026 - 18:07

List Question

Inequality with two sums

Understanding why an inequality holds in a proof

How to prove that adding $n$ to the numerator and denominator will move the resultant fraction close to $1$?

Inequality using lengths of the edges of a triangle

Show that $(a^2+3)(b^2+3)(c^2+3)(d^2+3)\geq 256$.

$f^{(n)}\leq1+|f|+|f'|+\dots+|f^{(n-1)}|$ implies that $f$ has an upper bound.

Inequality for finite product

Prove by induction that $\sum_{i=1}^n \frac{1}{\sqrt i} > \sqrt n$ for all integers $n \ge 2$

What is the interval of $A=\frac{2x-6}{x-4}$ provided that $5\lt x\lt 9$?

$1$-norm on $\mathbb R^p\times\mathbb R^p\times\dots\times \mathbb R^p$

Solving $\frac{2}{x} < 3$?

When $\left(2+\frac{x}{y}+\frac{y}{x}\right)^x$ is larger that $(1+x)^{1+x}$?

Matrix inequality with square products

Finding the upper bound of a 3-variable function.(inequality)

$\frac{1}{3}\sum_{cyc}\frac{1}{\sqrt{1+a}}\ge\frac{1}{\sqrt{1+\sqrt[3]{abc}}}$ if $\;a, b, c\;$ are positive reals s.t. $abc\ge2^9$

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