Zero of a function

A graph of the function cos(x) on the domain , with x-intercepts indicated in red. The function has zeroes where x is , , and .

In mathematics, a zero, also sometimes called a root, of a real-, complex- or generally vector-valued function f is a member x of the domain of f such that f(x) vanishes at x; that is, x is a solution of the equation

In other words, a "zero" of a function is an input value that produces an output of zero (0).

单词	Root of a polynomial
释义	Root of a polynomial 英语百科 Zero of a function In mathematics, a zero, also sometimes called a root, of a real-, complex- or generally vector-valued function f is a member x of the domain of f such that f(x) vanishes at x; that is, x is a solution of the equation In other words, a "zero" of a function is an input value that produces an output of zero (0).
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Root of a polynomial

Zero of a function