求插值多项式的拉格朗日(Lagrange) 法

#yangbocsu 2021.05.18 朗格朗日插值法
import math
import numpy as np
import matplotlib.pyplot as pltx = [-1,0,1]
y = [1,-2,10]
def Ln(x1):ln = 0for k in range(len(x)):L1 = 1.0