Identity (mathematics)
id:
identity-mathematics-179-3147177
title:
Identity (mathematics)
text:
In mathematics, an identity is an equality relating one mathematical expression A to another mathematical expression B, such that A and B produce the same value for all values of the variables within a certain domain of discourse. In other words, A = B is an identity if A and B define the same functions, and an identity is an equality between functions that are differently defined. For example, 2 = a 2 + 2 a b + b 2 and cos 2 θ + sin 2 θ = 1 are identities. Identities are sometimes indicated
brand slug:
wiki
category slug:
encyclopedia
description:
Equation that is satisfied for all values of the variables
original url:
https://en.wikipedia.org/wiki/Identity_(mathematics)
date created:
2003-08-17T15:12:07Z
date modified:
2024-09-05T06:50:01Z
main entity:
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image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/8/81/Trig_functions_on_unit_circle.svg","width":608,"height":560}
fields total:
13
integrity:
16