Question

Smallest radius sphere intersect with the quadric surface

score 84 · Answer 1 · 2019-11-16 05:15:13

84

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Smallest radius sphere intersect with the quadric surface

Published on 16 Nov 2019 - 5:15

score 228 · Answer 2 · 2019-11-17 15:48:44

228

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Equivalence of Max-Coefficient-Norm and Sup-Norm Polynomials using Constants Definition

Published on 17 Nov 2019 - 15:48

score 74 · Answer 3 · 2026-03-27 21:03:28

74

Views

Minimize $S=\frac{a}{b} + 2\sqrt{\frac{b}{c}+1} + 3\sqrt[3]{\frac{c}{a}+1}$ under $a=\max\{a,b,c\}$ and $a,b,c>0$.

Published on 27 Mar 2026 - 21:03

score 36 · Answer 4 · 2026-03-25 15:41:25

36

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Positivity analysis of Transcendental equation

Published on 25 Mar 2026 - 15:41

score 1.2k · Answer 5 · 2019-11-18 08:15:28

1.2k

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Global extremum on an open interval

Published on 18 Nov 2019 - 8:15

score 24 · Answer 6 · 2026-03-30 22:00:52

24

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approximate a product of multiple variables

Published on 30 Mar 2026 - 22:00

score 80 · Answer 7 · 2019-11-19 06:21:07

80

Views

2 Local maximum point in a permutation of $n$ distinct numbers

Published on 19 Nov 2019 - 6:21

score 148 · Answer 8 · 2019-11-20 01:05:31

148

Views

Maximize $\exp(x)+\exp(y)$ over the unit circle $x^2+y^2=1$.

Published on 20 Nov 2019 - 1:05

score 47 · Answer 9 · 2019-11-20 12:31:35

47

Views

Determine all local extremes of $f(x)=\frac{a}{2}\cdot \left(e^{\frac x a}+e^{\frac {-x} a}\right)$

Published on 20 Nov 2019 - 12:31

score 146 · Answer 10 · 2026-03-27 21:03:30

146

Views

Minimum value of $\frac{(x+8)^3}{x}$ without calculus, and weighted AM-GM inequality

Published on 27 Mar 2026 - 21:03

score 19 · Answer 11 · 2019-11-21 16:35:03

19

Views

About the infinimum of a real function

Published on 21 Nov 2019 - 16:35

score 43 · Answer 12 · 2019-11-21 20:09:21

43

Views

A Simple Question About Min and Max Operators on Fractional Expression

Published on 21 Nov 2019 - 20:09

score 36 · Answer 13 · 2019-11-22 08:29:49

36

Views

Seeking for smallest(minimum) and second smallest value of set of 2D functions

Published on 22 Nov 2019 - 8:29

score 114 · Answer 14 · 2019-11-22 18:09:49

114

Views

Prove that $\sqrt{2a^2+b+1}+\sqrt{2 b^2+a+1}\geq 4$ when $a+b=2$.

Published on 22 Nov 2019 - 18:09

score 31 · Answer 15 · 2019-11-23 10:51:49

Find maximize and minimize (if have) of $S=\frac{2\left(2a\right)^{2018}}{m}+\frac{2\left(2b\right)^{2018}}{n}+\frac{3c^{2018}}{p}$

List Question

Smallest radius sphere intersect with the quadric surface

Equivalence of Max-Coefficient-Norm and Sup-Norm Polynomials using Constants Definition

Minimize $S=\frac{a}{b} + 2\sqrt{\frac{b}{c}+1} + 3\sqrt[3]{\frac{c}{a}+1}$ under $a=\max\{a,b,c\}$ and $a,b,c>0$.

Positivity analysis of Transcendental equation

Global extremum on an open interval

approximate a product of multiple variables

2 Local maximum point in a permutation of $n$ distinct numbers

Maximize $\exp(x)+\exp(y)$ over the unit circle $x^2+y^2=1$.

Determine all local extremes of $f(x)=\frac{a}{2}\cdot \left(e^{\frac x a}+e^{\frac {-x} a}\right)$

Minimum value of $\frac{(x+8)^3}{x}$ without calculus, and weighted AM-GM inequality

About the infinimum of a real function

A Simple Question About Min and Max Operators on Fractional Expression

Seeking for smallest(minimum) and second smallest value of set of 2D functions

Prove that $\sqrt{2a^2+b+1}+\sqrt{2 b^2+a+1}\geq 4$ when $a+b=2$.

Find maximize and minimize (if have) of $S=\frac{2\left(2a\right)^{2018}}{m}+\frac{2\left(2b\right)^{2018}}{n}+\frac{3c^{2018}}{p}$

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