函式的0點
摘要
本文就多項式函式、連續函式和導函式以及廣義函式的.0點問題進行了討論.給出了函式和它的導函式0點個數的關係.定性地分析了解析函式的0點問題。然後借用泛函分析的理論解決不動點問題,並將壓縮對映原理進行推廣，得到了解方程的不動點方法，以及應用不動點原理求連續函式的0點.還討論了範數空間上函式的0點，及給出了範數空間上函式的0點集.在最後本文給出了求函式0點的數值方法.
關鍵詞：0點；存在性；函式；不動點
zeros of function
Abstract
The present paper mainly introduced the zero of polynomial， the existence of consecution function zero point had been proved. And had studied the zero of complex function，also studied fixed point in the generalized function，had studied the zero of function in norm space. Finally the method of asking for function zero have been given.
Keywords: existence; function; zero point; fixed point