Lagrange polynomial and its subpolynomials

Version 1.0.0.0 (17.2 KB) by Jan Valdman
Construction of the Lagrange interpolation polynomial from its definition.
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Given a set of n discrete points xp, the function computes coefficients of n Lagrange subpolynomials L_1(x), L_2(x), ...., L_n(x) satisfying the property L_i(xp_j)=0 if i~=j, L_i(xp_j)=1 if i=j, for i,j=1,...,n. A linear combination (with coefficients yp) of these subpolynomials defines a Lagrange polynomial passing through points (xp,yp).

Cite As

Jan Valdman (2024). Lagrange polynomial and its subpolynomials (https://www.mathworks.com/matlabcentral/fileexchange/62120-lagrange-polynomial-and-its-subpolynomials), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2014b
Compatible with any release
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lagrangePoly/

Version Published Release Notes
1.0.0.0

Description updated.

Title updated.