线性代数计算代码（python）

求逆矩阵

import numpy as np
from scipy import linalg

A = np.array([[ 1, 2],
              [ 3, 4]])
A_I = linalg.inv(A)
print(A_I)
print(np.dot(A,A_I))

求特征值与特征向量

import numpy as np
from scipy import linalg

A = np.array([[3, 1],
              [0, 2]])
eigen_value, eigen_evector = linalg.eig(A)
print(eigen_value)
print(eigen_evector)