l2.m

计算插值与曲线拟合的MATLAB程序

x=[1.2,2.3,3.9,5.1]
y=[3.887,4.276,4.651,2.117]
plot(x,y,'o')
hold on
xx=[2.101,4.234];
z=lagrange(x,y,xx)
plot(xx,z,'ro')