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# Authored by Weisheng Jiang
# Book 4  |  From Basic Arithmetic to Machine Learning
# Published and copyrighted by Tsinghua University Press
# Beijing, China, 2022
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# Bk4_Ch4_12.py

import numpy as np

A = np.matrix([[1, 2], 
               [3, 4]])

print(A.I)

B = np.array([[1, 2], 
              [3, 4]])

print(B.I)