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27 lines
543 B
Python
27 lines
543 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_Ch1_04.py
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import numpy as np
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# define two column vectors
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a = np.array([[-2], [5]])
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b = np.array([[5], [-1]])
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# calculate vector addition
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a_plus_b = a + b
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a_plus_b_2 = np.add(a,b)
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# calculate vector subtraction
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a_minus_b = a - b
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a_minus_b_2 = np.subtract(a,b)
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b_minus_a = b - a
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b_minus_a_2 = np.subtract(b,a)
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