python3-特征值,特征向量,逆矩阵，,import num

python3-特征值,特征向量,逆矩阵，,import num

import numpy as npx=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bprint(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 npx=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bprint(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. ]]

python3-特征值,特征向量,逆矩阵