指出了A.Cordero和Juan R.Torregrosa 2007年在“应用五阶求积公式的变形牛顿法”一文中主要定理的一个错误及其产生此错误的原因,并给出了一个修正的结果和证明.
A defect of the main result in a recent article "Variants of Newton's method using fifth-order quadrature formulas" by A. Cordero and Juan R. Torregrosa and the reasons that result in this defect are pointed out, a modified conclusion and its proof are presented.