方程根 meaning in English

root of equation

Certificate of the existence of formula root
例说方程根存在的证明
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。
To solve the polynomial equation ? ( z ) = 0 , this paper proposes a simultaneous iteration and investigates its convergence and initial condition . it proves that the convergence has order 3 under the initial condition
摘要采用文[ 1 - 3 ]中提到的加速方法，对经典的牛顿迭代法进行加速，得到了一个新的求多项式方程根的迭代法，主要对其收敛性进行了分析，得到了在较好的初始条件下该法是3阶收敛的。