Question

Approximating global extrema with the extrema of subsets of parameters

score 28 · Answer 1 · 2026-04-13 02:13:43

28

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Approximating global extrema with the extrema of subsets of parameters

Published on 13 Apr 2026 - 2:13

score 171 · Answer 2 · 2021-04-08 18:59:11

171

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Proving global minimum by lower bound of 2-variable functions

Published on 08 Apr 2021 - 18:59

score 105 · Answer 3 · 2021-04-10 16:15:47

105

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Proving global minimum by lower bound of 2-variable function $f(x,y)=x^4+2x^2y+y^2-4x^2-8x-8y$

Published on 10 Apr 2021 - 16:15

score 186 · Answer 4 · 2021-04-10 17:07:56

186

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Proving global minimum by lower bound of 2-variable function $f(x,y)=(x-2y)^4+64xy$

Published on 10 Apr 2021 - 17:07

score 141 · Answer 5 · 2026-04-13 11:48:14

141

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Calculate the maximum distance from a given point to a point on an eclipse

Published on 13 Apr 2026 - 11:48

score 192 · Answer 6 · 2021-04-11 13:51:31

192

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Minimize $3\sqrt{5-2x}+\sqrt{13-6y}$ subject to $x^2+y^2=4$

Published on 11 Apr 2021 - 13:51

score 83 · Answer 7 · 2026-04-10 21:26:46

83

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Discrete to continuum: differentiating a summation and finding its maxima

Published on 10 Apr 2026 - 21:26

score 69 · Answer 8 · 2026-04-13 06:31:54

69

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What does it imply for partial derivates to be linear combination of each other?

Published on 13 Apr 2026 - 6:31

score 309 · Answer 9 · 2026-03-28 22:35:44

309

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Global Maximum of $f(x,y)$ on a set $M$.

Published on 28 Mar 2026 - 22:35

score 301 · Answer 10 · 2026-04-08 19:12:33

301

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Can we define a “directional derivative” at saddle points?

Published on 08 Apr 2026 - 19:12

score 71 · Answer 11 · 2026-04-13 02:22:46

71

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find minimum value of PQ

Published on 13 Apr 2026 - 2:22

score 79 · Answer 12 · 2026-04-11 09:02:35

79

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How do I find the length attained by a bullet when fired by a rifle?

Published on 11 Apr 2026 - 9:02

score 146 · Answer 13 · 2026-04-12 01:27:45

146

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The maximum value of $f(x)$

Published on 12 Apr 2026 - 1:27

score 151 · Answer 14 · 2021-04-14 17:44:05

151

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Find the maximum of $\left|z_1-z_2\right|+\left|z_2-z_3\right|+\left|z_3-z_1\right|$

Published on 14 Apr 2021 - 17:44

score 52 · Answer 15 · 2021-04-14 17:49:00

52

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Prove that $f(x) = \max\{ u \cdot x \mid u \in \Sigma \}$ for $\Sigma = \{ u \in \mathbb{R}^n \mid \exists x \in \mathbb{R}^n, u = \nabla f(x) \}$

Published on 14 Apr 2021 - 17:49

List Question

Approximating global extrema with the extrema of subsets of parameters

Proving global minimum by lower bound of 2-variable functions

Proving global minimum by lower bound of 2-variable function $f(x,y)=x^4+2x^2y+y^2-4x^2-8x-8y$

Proving global minimum by lower bound of 2-variable function $f(x,y)=(x-2y)^4+64xy$

Calculate the maximum distance from a given point to a point on an eclipse

Minimize $3\sqrt{5-2x}+\sqrt{13-6y}$ subject to $x^2+y^2=4$

Discrete to continuum: differentiating a summation and finding its maxima

What does it imply for partial derivates to be linear combination of each other?

Global Maximum of $f(x,y)$ on a set $M$.

Can we define a “directional derivative” at saddle points?

find minimum value of PQ

How do I find the length attained by a bullet when fired by a rifle?

The maximum value of $f(x)$

Find the maximum of $\left|z_1-z_2\right|+\left|z_2-z_3\right|+\left|z_3-z_1\right|$

Prove that $f(x) = \max\{ u \cdot x \mid u \in \Sigma \}$ for $\Sigma = \{ u \in \mathbb{R}^n \mid \exists x \in \mathbb{R}^n, u = \nabla f(x) \}$

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