The method presented in this paper is not to approximate directly with Newton iterate the roots of a polynomial but to approximate its second order factors.
本文提出的这种方法，它的特点在于：我们不是用牛顿迭代法去直接逼近方程的根，而是用牛顿迭代法去逼近方程的二次因子。
Methods of exploring the real number roots of a real coefficient polynomial function are procedurally given.
较程序化地给出了实系数多项式函数实数根的求法。
The paper introduces the property theorem about roots of polynomial and the derivate limit theorem, by which we can study the derived number of a break point of piecewise function.
介绍了用多项式根的性质与导数极限定理求分段函数在分界点的导数的简单方法。
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