List questions from absolute-value

Published on 26 Dec 2020 - 19:37

98

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Absolute value of difference of squares

Published on 31 Dec 2020 - 20:38

91

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Prove that $|\sum\limits_{k=1}^{n} a_{k}| \ge |a_{1}| - \sum\limits_{k=2}^{n} |a_{k}|$.

Published on 02 Jan 2021 - 6:27

52

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express $f$ in the interval $[0, 2]$

Published on 04 Apr 2026 - 10:12

108

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Approximation: Understanding a property of continued fractions and convergents

Published on 08 Apr 2026 - 5:29

75

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Algebra question from HK Math Preliminary Contest 2020

Published on 06 Jan 2021 - 11:39

314

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Find the intersection point of a logarithmic and a quadratic functions.

Published on 07 Jan 2021 - 11:37

1k

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Double Integral of absolute value

Published on 08 Jan 2021 - 13:23

113

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Proving results on derivatives of absolute value of a function

Published on 08 Jan 2021 - 20:16

31

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Can't understand the notation of an exercise

Published on 09 Jan 2021 - 19:31

123

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Graph $|x| + |y| \leq 1$

Published on 09 Jan 2021 - 22:14

116

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Question about absolute value of the addition of vectors

Published on 10 Jan 2021 - 7:34

28

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Absolute values (definition proof)

Published on 10 Jan 2021 - 15:25

45

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$c \in C \setminus R$ third unity root, $z \in C$. If $|z - 1| \le 1$ and $|z - c| \le 1$, then $|z| \le 1$

Published on 13 Jan 2021 - 6:07

90

Views

What is a more rigorous method of solving modulus function inequalities?

Published on 14 Jan 2021 - 18:29

List Question

Is $±x$ the same as $ |x|$?

Absolute value of difference of squares

Prove that $|\sum\limits_{k=1}^{n} a_{k}| \ge |a_{1}| - \sum\limits_{k=2}^{n} |a_{k}|$.

express $f$ in the interval $[0, 2]$

Approximation: Understanding a property of continued fractions and convergents

Algebra question from HK Math Preliminary Contest 2020

Find the intersection point of a logarithmic and a quadratic functions.

Double Integral of absolute value

Proving results on derivatives of absolute value of a function

Can't understand the notation of an exercise

Graph $|x| + |y| \leq 1$

Question about absolute value of the addition of vectors

Absolute values (definition proof)

$c \in C \setminus R$ third unity root, $z \in C$. If $|z - 1| \le 1$ and $|z - c| \le 1$, then $|z| \le 1$

What is a more rigorous method of solving modulus function inequalities?

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