Last Updated：2025/11/21

(mathematics) Any function whose value is unchanged if the independent variable changes sign i.e. f(x) = f(-x)

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even function

Source Word

even function

(mathematics) Any function whose value is unchanged if the independent variable changes sign i.e. f(x) = f(-x)

Japanese Meaning

数学において、入力（独立変数）の符号が変わっても出力が変わらない（つまり f(x)=f(-x) を満たす）関数。

An even function has the property that f(x) = f(-x) for every x in its domain.

偶関数は、独立変数の符号を変えても値が変わらず、定義域のすべての x に対して f(x) = f(-x) を満たす。

Sense（1）

(mathematics) Any function whose value is unchanged if the independent variable changes sign i.e. f(x) = f(-x)

even functions

（ plural ）