偶函数
even function A function $f(x)$ is even if $f(-x) = f(x)$ for all $x$ in its domain. Its graph is symmetric about the y-axis.
CSCA 数学 考试术语
even function A function $f(x)$ is even if $f(-x) = f(x)$ for all $x$ in its domain. Its graph is symmetric about the y-axis.
CSCA 数学 考试术语