拉格朗日多项式推广误差估计注记  

On the Notes of Error Estimation through the Popularity of Lagrangian Multinomial

作　　者：邹淑芳[1] 

机构地区：[1]云南广播电视大学职业技术学院,云南昆明650223

出　　处：《云南电大学报》2007年第2期94-96,共3页Journal of Yunnan Rty University

基　　金：云南省教育厅应用基础研究基金(5Y0567D)

摘　　要：在许多实际计算中,要想得到精确值较为困难,函数类中,具有精确值的函数寥寥无几,这就促使我们去思考,能否找到一些函数去逼近所需函数,逼近的程度是否最佳。如果利用拉格朗日插值多项式,找出最佳逼近多项式,得出推广估计误差式,并对其进行改进,使误差最小,便能在许多实际问题中更广泛地应用最佳逼近。It is very difficult to make precise value in the actual calculation. Among the kinds of functions, the function of precise value is little. Whether some functions can be found to close to the function and the degree of closeness is best needs our consideration. The author uses Lagrangian interpolation multinomial to find out a closest multinomial and obtain a spread error estimation formula, and improve them and make the error minimum so as to use the best closeness in the actual problem.

关 键 词：拉格朗日插值多项式 误差估计 改进推广误差估计 

分 类 号：O174[理学—数学]