摘要
基于Newton迭代法 ,提出了一种有效的预估校正 (P .C .)迭代格式。本方法把牛顿法中的微分以差商替代 ,因而 ,既可求解具离散根的方程 ,也适用于有重根的方程求解 ,大量的试验结果表明 ,本文算法不仅可有效解决重根问题 ,而且有较高的收敛速度。
Based on Newton iterative method, an efficient scheme of Predictor-Corrector (P.C.) iterative algorithm is presented in this paper. The method is used to replace the derivation in Newton format by the difference quotient in order to solve the type of equation that has multiple roots, It is shown by numerical examples that P.C. iterative algorithm is not only effective in solving the multiple root problem, but also has a high speed of convergence.
出处
《航空计算技术》
2002年第2期12-14,共3页
Aeronautical Computing Technique
