untitled2.m

可以方便的调用这个函数

x0=0.46;x1=0.47;x2=0.48;
y0=0.484655;y1=0.493745;y2=0.502750;
x=0.472
L2=y0*(((x-x1)*(x-x2))/((x0-x1)*(x0-x2)))+y1*(((x-x0)*(x-x2))/((x1-x0)*(x1-x2)))+y2*(((x-x0)*(x-x1))/((x2-x0)*(x2-x1)))