equation root的用法和样例：
例句
- The essay tries to do some comparative studies towards several of alterative methods used in Non-lined Equation Root and its realization.
本文对几种迭代法求取非线性方程根的算法及实现作了对比介绍。 - By means of constructional iterative equation, this paper presents a way to give out the existence and singularity of a type of equational root with gradual approach method.
摘要本文通过构造迭代函数，利用逐次逼近的方法给出了一类方程根的存在性与唯一性的判断的一种解决方案。
