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单词 Implicit functions
释义

Implicit functions

中文百科

隐函数 Implicit function

(重定向自Implicit functions)

在数学中,隐式方程implicit equation)是形同f(x_1,x_2,\cdots,x_n)=0的关系,其中f是多元函数。比如单位圆的隐式方程是x^2+y^2-1=0

隐函数implicit function)是由隐式方程所隐含定义的函数,比如y=\sqrt{1-x^2}是由x^2+y^2-1=0确定的函数。而可以直接用含自变量的算式表示的函数称为显函数,也就是通常所说的函数,如y=\cos(x)

隐函数定理说明了隐式方程在什么情况下会确定出隐函数。

英语百科

Implicit function 隐函数

(重定向自Implicit functions)

In mathematics, an implicit equation is a relation of the form R(x1,..., xn) = 0, where R is a function of several variables (often a polynomial). For example, the implicit equation of the unit circle is  x^2 +y^2-1 = 0.

An implicit function is a function that is defined implicitly by an implicit equation, by associating one of the variables (the value) with the others (the arguments). Thus, an implicit function for y in the context of the unit circle is defined implicitly by  x^2 +[f(x)]^2-1 = 0.. This implicit equation defines f as a function of x only if -1  x  1 and one considers only non-negative (or non-positive) values for the values of the function.

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更新时间:2025/6/19 12:33:14