l5.m

计算插值与曲线拟合的MATLAB程序

clear
format long
x = [0.4, 0.5,  0.6, 0.7, 0.8];
y = [-0.916291, -0.693147, -0.510826, -0.356675, -0.223144];
xi = [0.54];
yi = lagrange(x, y, xi)