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18 lines
376 B
Python
18 lines
376 B
Python
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###############
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# Authored by Weisheng Jiang
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# Book 4 | From Basic Arithmetic to Machine Learning
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# Published and copyrighted by Tsinghua University Press
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# Beijing, China, 2022
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###############
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# Bk4_Ch4_11.py
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from numpy.linalg import inv
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A = np.array([[1., 2.],
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[3., 4.]])
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# matrix inverse
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A_inverse = inv(A)
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A_times_A_inv = A@A_inverse
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