Question

Which are differentiable for all x?

score 560 · Answer 1 · 2018-10-10 20:00:38

560

Views

Which are differentiable for all x?

Published on 10 Oct 2018 - 20:00

score 134 · Answer 2 · 2018-10-12 10:41:20

134

Views

there are at most finitely many points

Published on 12 Oct 2018 - 10:41

score 67 · Answer 3 · 2018-10-13 23:56:28

67

Views

Calculating integral of absolute integrand

Published on 13 Oct 2018 - 23:56

score 36 · Answer 4 · 2018-10-14 03:35:56

36

Views

Rewriting $\vec x_1\cdot \vec x_2 |\vec x_3|+\vec x_2\cdot \vec x_3 |\vec x_1|+\vec x_3\cdot \vec x_1 |\vec x_2|$?

Published on 14 Oct 2018 - 3:35

score 1.4k · Answer 5 · 2018-10-14 22:26:20

1.4k

Views

Clueless on how to prove $\|(a,b)\| \le |a|+|b|$

Published on 14 Oct 2018 - 22:26

score 75 · Answer 6 · 2018-10-15 01:46:10

75

Views

Why is $|x|$ defined as $\sqrt{x^2}$ instead of $(\sqrt{x})^2$?

Published on 15 Oct 2018 - 1:46

score 68 · Answer 7 · 2018-10-16 00:55:08

68

Views

How to prove $|x_i - x_j| \geq |y_i - y_j| - 2 ||x - y||_\infty $

Published on 16 Oct 2018 - 0:55

score 59 · Answer 8 · 2018-10-17 12:19:57

59

Views

Proving that changing signs inside absolute value is valid for any two real numbers: $\forall x,y\in\mathbb{R}[\rvert x-y \lvert = \rvert y-x \lvert]$

Published on 17 Oct 2018 - 12:19

score 162 · Answer 9 · 2018-10-17 23:24:17

162

Views

IMO 1959 - Problem 2 - Simplification of square-root values

Published on 17 Oct 2018 - 23:24

score 255 · Answer 10 · 2018-10-18 07:38:44

255

Views

Square root of absolute difference is greater than absolute of square root difference

Published on 18 Oct 2018 - 7:38

score 72 · Answer 11 · 2018-10-18 17:55:18

72

Views

Is it allowed to solve this inequality $x|x-1|>-3$ by dividing each member with $x$?

Published on 18 Oct 2018 - 17:55

score 36 · Answer 12 · 2018-10-20 13:23:24

36

Views

Need help with my first college math class - multiple absolute value equation

Published on 20 Oct 2018 - 13:23

score 1.2k · Answer 13 · 2026-03-25 04:34:56

1.2k

Views

Proving that the absolute value function is elementary.

Published on 25 Mar 2026 - 4:34

score 194 · Answer 14 · 2018-10-23 16:08:40

194

Views

Absolute value raised to a power expand and represent in matrix form

Published on 23 Oct 2018 - 16:08

score 399 · Answer 15 · 2026-03-25 11:21:26

399

Views

On the maximal unramified extension of $\mathbb{Q}_{p}$ of a given degree.

Published on 25 Mar 2026 - 11:21

List Question

Which are differentiable for all x?

there are at most finitely many points

Calculating integral of absolute integrand

Rewriting $\vec x_1\cdot \vec x_2 |\vec x_3|+\vec x_2\cdot \vec x_3 |\vec x_1|+\vec x_3\cdot \vec x_1 |\vec x_2|$?

Clueless on how to prove $\|(a,b)\| \le |a|+|b|$

Why is $|x|$ defined as $\sqrt{x^2}$ instead of $(\sqrt{x})^2$?

How to prove $|x_i - x_j| \geq |y_i - y_j| - 2 ||x - y||_\infty $

Proving that changing signs inside absolute value is valid for any two real numbers: $\forall x,y\in\mathbb{R}[\rvert x-y \lvert = \rvert y-x \lvert]$

IMO 1959 - Problem 2 - Simplification of square-root values

Square root of absolute difference is greater than absolute of square root difference

Is it allowed to solve this inequality $x|x-1|>-3$ by dividing each member with $x$?

Need help with my first college math class - multiple absolute value equation

Proving that the absolute value function is elementary.

Absolute value raised to a power expand and represent in matrix form

On the maximal unramified extension of $\mathbb{Q}_{p}$ of a given degree.

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