Three-Step Two-Hybrid Block Method for the Direct Solution of Second-Order Ordinary Differential Equations

Raymond Dominic, T. K. Yusuf
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Abstract

In this paper a three-step two hybrid block method with two offgrid hybrid points chosen within interval [Xn,Xn+1] and [Xn+1,Xn+2] was developed to solve second Order Ordinary Differential Equations directly, using the power series as the basic function to approximate and generate some continuous schemes. The basic properties of the method was investigated and was found to converge. Numerical Solution of our method was tested on some stiff equations and was found to give better approximation than the existing method.
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二阶常微分方程直接解的三步双混合块法
本文提出了在区间[Xn,Xn+1]和区间[Xn+1,Xn+2]内选取两个离网混合点的三步两混合块法,直接求解二阶常微分方程,以幂级数为基本函数近似生成若干连续格式。研究了该方法的基本性质,发现其收敛性。对一些刚性方程的数值解进行了测试,结果表明该方法的近似性优于现有方法。
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