Question

Prove $\max \{|x_1 - y_1|,\dots,|x_n - y_n|\}$ is a metric space in $\mathbb{R}^n$

score 1.7k · Answer 1 · 2018-08-29 01:07:56

1.7k

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Prove $\max \{|x_1 - y_1|,\dots,|x_n - y_n|\}$ is a metric space in $\mathbb{R}^n$

Published on 29 Aug 2018 - 1:07

score 111 · Answer 2 · 2018-08-29 16:29:25

111

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The minimum value of $\mathrm{k \in \Bbb Z}$ for the equation $\mathrm{e}^x = kx^2$ to have maximum number of solutions

Published on 29 Aug 2018 - 16:29

score 860 · Answer 3 · 2018-08-29 22:33:09

860

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How to find a global minimum for $\frac{1}{2}x^tQx-b^tx$

Published on 29 Aug 2018 - 22:33

score 1.3k · Answer 4 · 2018-08-29 22:55:48

1.3k

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Proving $\max (d_1, d_2)$ is a metric

Published on 29 Aug 2018 - 22:55

score 2.4k · Answer 5 · 2026-03-25 01:38:31

2.4k

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Prove that $(1+x)^\frac{1}{x}+(1+\frac{1}{x})^x \leq 4$

Published on 25 Mar 2026 - 1:38

score 119 · Answer 6 · 2026-03-26 03:08:21

119

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find the range $(x_{1}+x_{2}+\cdots+x_{2009})^2=4(x_{1}x_{2}+x_{2}x_{3}+\cdots+x_{2009}x_{1})^2$

Published on 26 Mar 2026 - 3:08

score 347 · Answer 7 · 2018-09-01 19:40:51

347

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To find the maximum and minimum value of this expression

Published on 01 Sep 2018 - 19:40

score 121 · Answer 8 · 2026-03-26 03:08:20

121

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Maximizing $x^2 y + y^2 z + z^2 x − x^2 z − y^2 x − z^2 y$ for $x$, $y$, $z$ between $0$ and $1$ (inclusive)

Published on 26 Mar 2026 - 3:08

score 291 · Answer 9 · 2018-09-03 09:30:14

Find Relative Maxima And Minima for $y = 2 x ^ { 3 } - 3 x ^ { 2 } - 36 x + 4 = 0$ & find absolute maxima /minima in the interval $[ 0,4 ]$

score 38 · Answer 10 · 2018-09-03 12:23:43

38

Views

Generalizing $N$ for different cases of a functions maxima.

Published on 03 Sep 2018 - 12:23

score 43 · Answer 11 · 2018-09-04 12:31:57

43

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Is this equation solvable (by hand) and what do you call this equation?

Published on 04 Sep 2018 - 12:31

score 34 · Answer 12 · 2026-03-27 04:56:50

34

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Find local maxima and minima of impulse train

Published on 27 Mar 2026 - 4:56

score 50 · Answer 13 · 2018-09-07 01:34:06

50

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Find $\min \Pi_{i=1}^n|x-a_i|$

Published on 07 Sep 2018 - 1:34

score 2.2k · Answer 14 · 2026-03-25 12:29:36

2.2k

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Maximum value of $ab+bc+ca$ given that $a+2b+c=4$

Published on 25 Mar 2026 - 12:29

score 51 · Answer 15 · 2018-09-08 15:26:23

51

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4-th derivative of $f(x,y)$

Published on 08 Sep 2018 - 15:26

List Question

Prove $\max \{|x_1 - y_1|,\dots,|x_n - y_n|\}$ is a metric space in $\mathbb{R}^n$

The minimum value of $\mathrm{k \in \Bbb Z}$ for the equation $\mathrm{e}^x = kx^2$ to have maximum number of solutions

How to find a global minimum for $\frac{1}{2}x^tQx-b^tx$

Proving $\max (d_1, d_2)$ is a metric

Prove that $(1+x)^\frac{1}{x}+(1+\frac{1}{x})^x \leq 4$

find the range $(x_{1}+x_{2}+\cdots+x_{2009})^2=4(x_{1}x_{2}+x_{2}x_{3}+\cdots+x_{2009}x_{1})^2$

To find the maximum and minimum value of this expression

Maximizing $x^2 y + y^2 z + z^2 x − x^2 z − y^2 x − z^2 y$ for $x$, $y$, $z$ between $0$ and $1$ (inclusive)

Find Relative Maxima And Minima for $y = 2 x ^ { 3 } - 3 x ^ { 2 } - 36 x + 4 = 0$ & find absolute maxima /minima in the interval $[ 0,4 ]$

Generalizing $N$ for different cases of a functions maxima.

Is this equation solvable (by hand) and what do you call this equation?

Find local maxima and minima of impulse train

Find $\min \Pi_{i=1}^n|x-a_i|$

Maximum value of $ab+bc+ca$ given that $a+2b+c=4$

4-th derivative of $f(x,y)$

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