함수의 0 정의
A value of x which makes a function f(x) equal zero. In other terms a value of x such that f(x) = 0. A zero of a function may be a real or complex number. To determine the zero of a function, set the equation to zero and solve for the value of x. If the equation in question is a polynomial than there can be more than one zero for that function. In this case, the roots of the equation are the zeros of the function.
출처
“Zero of a Function.” Wikipedia, Wikimedia Foundation, 13 Apr. 2020, en.wikipedia.org/wiki/Zero_of_a_function.
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