标签：int pre nump 逆矩阵 print sha range dia python
import numpy as np
x=np.diag((1,2,3))#对角阵
print(x)
a,b=np.linalg.eig(x)#特征值给a，特征向量给b
print(a)
print(b)
[[1 0 0]
[0 2 0]
[0 0 3]]
[1. 2. 3.]
[[1. 0. 0.]
[0. 1. 0.]
[0. 0. 1.]]
import numpy as np
x=np.diag((1,2,3))#对角阵
print(x)
a,b=np.linalg.eig(x)#特征值给a，特征向量给b
print(a)
print(b)
A=np.arange(4).reshape(2,2)
print(np.linalg.inv(A))#逆矩阵[[1 0 0]
[0 2 0]
[0 0 3]]
[1. 2. 3.]
[[1. 0. 0.]
[0. 1. 0.]
[0. 0. 1.]]
[[-1.5 0.5]
[ 1. 0. ]]
标签：int pre nump 逆矩阵 print sha range dia python
原文地址：http://blog.51cto.com/13959448/2326917
