Improved Ostrowski-Like Methods Based on Cubic Curve Interpolation  

作　　者：Janak Raj Sharma Rangan Kumar Guha Rajni Sharma 

机构地区：[1]不详

出　　处：《Applied Mathematics》2011年第7期816-823,共8页应用数学（英文）

摘　　要：In this paper, we derive two higher order multipoint methods for solving nonlinear equations. The methodology is based on Ostrowski’s method and further developed by using cubic interpolation process. The adaptation of this strategy increases the order of Ostrowski’s method from four to eight and its efficiency index from 1.587 to 1.682. The methods are compared with closest competitors in a series of numerical examples. Moreover, theoretical order of convergence is verified on the examples.In this paper, we derive two higher order multipoint methods for solving nonlinear equations. The methodology is based on Ostrowski’s method and further developed by using cubic interpolation process. The adaptation of this strategy increases the order of Ostrowski’s method from four to eight and its efficiency index from 1.587 to 1.682. The methods are compared with closest competitors in a series of numerical examples. Moreover, theoretical order of convergence is verified on the examples.

关 键 词：Nonlinear EQUATIONS Ostrowski’s Method ROOT-FINDING Order of CONVERGENCE CUBIC INTERPOLATION 

分 类 号：O1[理学—数学]