List questions from absolute-value

Published on 27 Nov 2017 - 2:11

101

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How to show that $|(1+ia)/(1-i/a)| = a$?

Published on 27 Nov 2017 - 8:55

3.7k

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Removing absolute value signs when solving differential equations and constant solutions

Published on 29 Nov 2017 - 18:07

112

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Derivative of 1 + abs(x + 2)

Published on 02 Dec 2017 - 4:34

221

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Solutions of Absolute Value inequality

Published on 02 Dec 2017 - 11:31

1.2k

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Can you move absolute value inside summation?

Published on 03 Dec 2017 - 5:42

780

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If $ \frac{1-z}{1+z} $ is purely imaginary, then what will be $ \vert z \vert $?

Published on 03 Dec 2017 - 10:42

83

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Under what conditions is $||x|-|y|| = |x-y|$ true?

Published on 03 Dec 2017 - 13:14

297

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Absolute Value of Error Function

Published on 29 Mar 2026 - 4:34

51.8k

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Definite integral of absolute value function?

Published on 05 Dec 2017 - 2:25

32

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A confusion about the use of triangular inequality and abolute value in a proof

Published on 05 Dec 2017 - 6:23

318

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Absolute value of definite integral: If $\big|\int^b_af(x) dx \big|\le(b-a)^2$ prove that $f(x)=0$ for all $x \in \mathbb{R}$.

Published on 06 Dec 2017 - 4:46

845

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Am I way off on this proof of continuity of $f(x)=\frac{x+|x|}{2}$?

Published on 07 Dec 2017 - 6:25

1k

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Modulus of normal random variable

Published on 08 Dec 2017 - 7:03

427

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Show that Q = S/θ is a pivotal quantity, and use this to provide a 95% upper confidence limit for θ

Published on 25 Feb 2026 - 18:20

List Question

Triangle inequality and reverse triangle inequality problem

How to show that $|(1+ia)/(1-i/a)| = a$?

Removing absolute value signs when solving differential equations and constant solutions

Derivative of 1 + abs(x + 2)

Solutions of Absolute Value inequality

Can you move absolute value inside summation?

If $ \frac{1-z}{1+z} $ is purely imaginary, then what will be $ \vert z \vert $?

Under what conditions is $||x|-|y|| = |x-y|$ true?

Absolute Value of Error Function

Definite integral of absolute value function?

A confusion about the use of triangular inequality and abolute value in a proof

Absolute value of definite integral: If $\big|\int^b_af(x) dx \big|\le(b-a)^2$ prove that $f(x)=0$ for all $x \in \mathbb{R}$.

Am I way off on this proof of continuity of $f(x)=\frac{x+|x|}{2}$?

Modulus of normal random variable

Show that Q = S/θ is a pivotal quantity, and use this to provide a 95% upper confidence limit for θ

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