Question

If $\Delta_3 u>0$ on $D$, prove $\max_{x\in D}u(x)=u(x_0)$ for some $x_0\in \partial D$

score 43 · Answer 1 · 2023-11-26 02:42:57

43

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If $\Delta_3 u>0$ on $D$, prove $\max_{x\in D}u(x)=u(x_0)$ for some $x_0\in \partial D$

Published on 26 Nov 2023 - 2:42

score 106 · Answer 2 · 2026-03-29 22:23:55

106

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For $x,y,z$ positive real numbers $3x+4y+7z=1$. Find minumum integer value of $1/x+1/y+1/z$

Published on 29 Mar 2026 - 22:23

score 59 · Answer 3 · 2023-11-30 16:47:37

59

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Finding min value of exponential expression.

Published on 30 Nov 2023 - 16:47

score 43 · Answer 4 · 2026-03-29 07:37:39

43

Views

Circles1 with maximum and minimum values

Published on 29 Mar 2026 - 7:37

score 47 · Answer 5 · 2026-04-05 15:44:14

47

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Geometric interpretation of maximizing utility functions

Published on 05 Apr 2026 - 15:44

score 116 · Answer 6 · 2023-12-02 16:04:47

116

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when $\underset{x\in I}{\max}|(x-x_0)(x-x_1)|$ is minimum

Published on 02 Dec 2023 - 16:04

score 49 · Answer 7 · 2023-12-03 14:01:50

49

Views

Calculus minimum area problem. Difficulty in forming an equation

Published on 03 Dec 2023 - 14:01

score 293 · Answer 8 · 2026-04-06 01:22:52

293

Views

Finding the max of a function using $f(x)=L(x)-E(x)$ where $L(x)$ is linear and $E(x)$ is exponential

Published on 06 Apr 2026 - 1:22

score 53 · Answer 9 · 2026-04-03 08:02:22

53

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Finding local and global extrema of a function with a constraint

Published on 03 Apr 2026 - 8:02

score 60 · Answer 10 · 2023-12-07 03:54:30

If triangle ABC satisfies the condition $2\sin{A} + \sin{B} = 2\sin{C}$, find the minimum value of $\frac{5}{\sin{A}}+\frac{9}{\sin{C}}$.

score 75 · Answer 11 · 2026-03-30 05:15:27

75

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Find the range of the function $f(x)=(\sin^{-1}x)^2-(\cot^{-1}x)^2$

Published on 30 Mar 2026 - 5:15

score 126 · Answer 12 · 2026-03-26 09:39:59

126

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$a+b+c−3≥k(a−b)(b−c)(c−a)$

Published on 26 Mar 2026 - 9:39

score 95 · Answer 13 · 2026-04-01 14:22:45

95

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Why do we chose delta to be less than 1 in the scratchwork? Epsilon-delta definition

Published on 01 Apr 2026 - 14:22

score 65 · Answer 14 · 2023-12-12 23:37:43

65

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Maximizing $T=\frac{\sqrt{5ab+4}+\sqrt{5bc+4}+\sqrt{5ca+4}}{\sqrt{a+b+c+abc}}$ when $ab+bc+ca=3.$

Published on 12 Dec 2023 - 23:37

score 43 · Answer 15 · 2023-12-13 05:36:25

43

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Maximum Length of a Triangle

Published on 13 Dec 2023 - 5:36

List Question

If $\Delta_3 u>0$ on $D$, prove $\max_{x\in D}u(x)=u(x_0)$ for some $x_0\in \partial D$

For $x,y,z$ positive real numbers $3x+4y+7z=1$. Find minumum integer value of $1/x+1/y+1/z$

Finding min value of exponential expression.

Circles1 with maximum and minimum values

Geometric interpretation of maximizing utility functions

when $\underset{x\in I}{\max}|(x-x_0)(x-x_1)|$ is minimum

Calculus minimum area problem. Difficulty in forming an equation

Finding the max of a function using $f(x)=L(x)-E(x)$ where $L(x)$ is linear and $E(x)$ is exponential

Finding local and global extrema of a function with a constraint

If triangle ABC satisfies the condition $2\sin{A} + \sin{B} = 2\sin{C}$, find the minimum value of $\frac{5}{\sin{A}}+\frac{9}{\sin{C}}$.

Find the range of the function $f(x)=(\sin^{-1}x)^2-(\cot^{-1}x)^2$

$a+b+c−3≥k(a−b)(b−c)(c−a)$

Why do we chose delta to be less than 1 in the scratchwork? Epsilon-delta definition

Maximizing $T=\frac{\sqrt{5ab+4}+\sqrt{5bc+4}+\sqrt{5ca+4}}{\sqrt{a+b+c+abc}}$ when $ab+bc+ca=3.$

Maximum Length of a Triangle

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