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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_14.py

import numpy as np

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

B = np.array([[5,6],
              [7,8]])

# Hadamard product
A_times_B_piecewise = np.multiply(A,B)
A_times_B_piecewise_V2 = A*B