spline

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import numpy as np
def sist_lin (A,B):
 A=np.array(A)
 B=np.array(B)
 C=np.linalg.solve(A,B)
 return C
def matriz_a (n,h):
 for i in range (n):
 
##################################################
P=[[0.0,1.0],[1.0,2.718],[2.0,7.389],[3.0,20.08]]
n=len(P)
y=[0]*n
for i in range (n):
 y[i]=P[i][1]
print y
 
h =[0]*(n-1)
for i in range(n-1):
 h[i]=(P[i+1][0])-(P[i][0])
print h
#C=sist_lin (A,B)
#print C