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MEANING OF
反函數
fǎn
hán
shù
反函數
(
反函数
)
How to write
Definition
inverse function (math.)
Usage
中文释义
设函数y=f(x)的定义域为a,值域为c,从y=f(x)中解出x,得x=φ(y)。如果对于c中每一个y的值,通过x=φ(y),在a中都有唯一确定的x值与它对应,那么x=φ(y)就表示x是自变量y的函数,这样函数x=φ(y)称为函数y=f(x)的反函数,记作x=f-1(y)。
Characters
反
fǎn
函
hán
数
(
數
) shù/shǔ/shuò
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