List questions from inequality

Published on 25 Mar 2026 - 9:24

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Find the minimizer of $A=12a+13b+11c$

Published on 25 Mar 2026 - 6:05

89

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Strict inequality in an inner product.

Published on 01 Apr 2026 - 5:09

144

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find the maximum possible value of $n_9-n_1$

Published on 26 Mar 2026 - 4:51

549

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Help with proof of $|x+y| \geq |x|-|y|$

Published on 25 Mar 2026 - 11:13

32

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Equivalence of two inequalities

Published on 16 Jun 2018 - 4:24

105

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Without relating the problem to polynomials, how can we solve this inequality?

Published on 16 Jun 2018 - 8:30

115

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How to prove that $n^n \times n! \times (\sqrt{2})^{n}\le (2n)! $

Published on 25 Mar 2026 - 15:51

48

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Perimeter of a finite set formula - isoperimeter inequality

Published on 26 Mar 2026 - 1:34

2.8k

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Quadratic Equation with imaginary roots.

Published on 26 Mar 2026 - 11:16

164

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If $0⩽x⩽y⩽z⩽w⩽u$ and $x+y+z+w+u=1$, prove $xw+wz+zy+yu+ux⩽\frac15$

Published on 01 Apr 2026 - 22:52

42

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Proving $(|a|+|c|)|x|+(|b|+|d|)|y|\le(|a|+|b|+|c|+|d|)\sqrt{\smash[b]{x^2+y^2}}$

Published on 17 Jun 2018 - 4:07

221

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Proving that $\cosh(x)\cosh(y) \geq \sqrt{x^2 + y^2}$

Published on 25 Mar 2026 - 6:12

431

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Proving that $\cosh^{-1} (\cosh(x)\cosh(y) ) \geq \sqrt{x^2 + y^2}$ and the CAT(0) inequality

Published on 25 Mar 2026 - 6:13

126

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$\frac{a^2} {1+a^2} + \frac{b^2} {1+b^2} + \frac{c^2} {1+c^2} = 2.$ Prove $\frac{a} {1+a^2} + \frac{b} {1+b^2} + \frac{c} {1+c^2} \leq \sqrt{2}.$

Published on 23 Mar 2026 - 4:12

List Question

How are these Chernoff's bounds derived?

Find the minimizer of $A=12a+13b+11c$

Strict inequality in an inner product.

find the maximum possible value of $n_9-n_1$

Help with proof of $|x+y| \geq |x|-|y|$

Equivalence of two inequalities

Without relating the problem to polynomials, how can we solve this inequality?

How to prove that $n^n \times n! \times (\sqrt{2})^{n}\le (2n)! $

Perimeter of a finite set formula - isoperimeter inequality

Quadratic Equation with imaginary roots.

If $0⩽x⩽y⩽z⩽w⩽u$ and $x+y+z+w+u=1$, prove $xw+wz+zy+yu+ux⩽\frac15$

Proving $(|a|+|c|)|x|+(|b|+|d|)|y|\le(|a|+|b|+|c|+|d|)\sqrt{\smash[b]{x^2+y^2}}$

Proving that $\cosh(x)\cosh(y) \geq \sqrt{x^2 + y^2}$

Proving that $\cosh^{-1} (\cosh(x)\cosh(y) ) \geq \sqrt{x^2 + y^2}$ and the CAT(0) inequality

$\frac{a^2} {1+a^2} + \frac{b^2} {1+b^2} + \frac{c^2} {1+c^2} = 2.$ Prove $\frac{a} {1+a^2} + \frac{b} {1+b^2} + \frac{c} {1+c^2} \leq \sqrt{2}.$

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