absolute value — An Etymological Dictionary of Astronomy and Astrophysics

absolute value

ارزش ِ اوست

arzeš-e avast

Fr.: valeur absolue

For any → real number a, the non-negative value of a without regard to its sign; denoted by |a|. Same as → modulus. The absolute value of a is always either → positive or → zero, but never negative. The absolute value of a number may be thought of as its → distance from zero. The following rules hold:
|ab| = |a||b|
|a + b| ≤ |a| + |b|
|a - b| ≥ |a| - |b|
For a> 0, |x| ≤ a if and only if -a ≤ x ≤ a.

See also: → absolute; → value.

An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک