偶ぐう関かん数すう

noun

even function

A mathematical function satisfying f(x) = f(-x) for all x in its domain. Used in calculus and analysis.

• cos(x)は偶たま関かん数すうの代だい表ひょう例れいです。

  cos(x) is a typical example of an even function.

• 偶ぐう関かん数すうのグラフはy軸じくに関かんして対たい称しょうになります。

  The graph of an even function is symmetric with respect to the y-axis.