绝对值

Also known as absolute value function, absolute value of real number, modulus, absolute value of a real number, abs, abs()

nonnegative number with the same magnitude as a given real number

AI overview

The absolute value of a number is its distance from zero on the number line, always expressed as a nonnegative (zero or positive) value. It matters because it lets us measure magnitude or "size" without worrying about whether a number is positive or negative.

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Described at

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Wikidata facts

Subclass of: function of a real variable
Image: AbsoluteValueDiagram.svg

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different from: magnitude of a complex number
definition domain: set of real numbers
short name: abs
Stack Exchange tag: stackoverflow.com/tags/absolute-value
Commons category: Absolute value
Commons gallery: Absolute value
maintained by WikiProject: WikiProject Mathematics
described at URL: andreailmatematico.it/matematica/dalle-equazioni-ai-primi-studi-di-funzione/funzione-modulo-o-valore-assoluto

Sources (3)

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Article · 中文

在数学中，实数的绝对值或模，记号为，是指去掉的符号所得的非负值。若是正数，则；若是负数（则是正数），则；零的绝对值为零（）。例如，和的绝对值都是。绝对值可看作该数和零之间的距离。绝对值的定义也可以从实数扩展到复数、四元数、、域、向量空间等范围。在数学和物理中，绝对值与量、距离、范数等概念密切相关。

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绝对值

Described at

Wikidata facts

Article · 中文

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