New algorithm for computing the Hermite interpolation polynomial

被引:4
|
作者
Messaoudi, A. [1 ]
Sadaka, R. [1 ]
Sadok, H. [2 ]
机构
[1] Mohammed V Univ Rabat, Ecole Normale Super, Ave Mohammed Belhassan El Ouazzani,BP 5118, Rabat, Morocco
[2] Univ Littoral Cote dOpale, LMPA, Batiment H Poincarre,50 Rue F Buisson, F-62280 Calais, France
关键词
Polynomial interpolation; Hermite interpolation polynomials; Schur complement; Matrix Sylvester identity; Recursive polynomial interpolation algorithm; Matrix recursive interpolation algorithm; RECURSIVE INTERPOLATION; LINEAR-EQUATIONS; SOLVING SYSTEMS; PROJECTION; FORMALISM;
D O I
10.1007/s11075-017-0353-6
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Let x (0), x (1),ai , x (n) , be a set of n + 1 distinct real numbers (i.e., x (i) not equal x (j) , for i not equal j) and y (i, k) , for i = 0,1,ai , n, and k = 0 ,1 ,ai , n (i) , with n (i) ae 1, be given of real numbers, we know that there exists a unique polynomial p (N - 1)(x) of degree N - 1 where , such that , for i = 0,1,ai , n and k = 0,1,ai , n (i) . P (N-1)(x) is the Hermite interpolation polynomial for the set {(x (i) , y (i, k) ), i = 0,1,ai , n, k = 0,1,ai , n (i) }. The polynomial p (N-1)(x) can be computed by using the Lagrange polynomials. This paper presents a new method for computing Hermite interpolation polynomials, for a particular case n (i) = 1. We will reformulate the Hermite interpolation polynomial problem and give a new algorithm for giving the solution of this problem, the Matrix Recursive Polynomial Interpolation Algorithm (MRPIA). Some properties of this algorithm will be studied and some examples will also be given.
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页码:1069 / 1092
页数:24
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