Python笔记:3.1.3矩阵

    xiaoxiao2021-04-15  333

    # -*- coding: utf-8 -*- """ Created on Tue May 21 23:23:16 2019 @author: User """ import numpy as np m1=np.mat([[1,2,3],[4,5,6]]) print('\nm1:') print(m1) print(m1 * 8) m2=np.mat([[1,2,3],[4,5,6],[7,8,9]]) print('\nm2:') print(m2) print('\nm1 * m2:') print(m1 * m2) print(m2.I)

    运行:

    m1: [[1 2 3]  [4 5 6]] [[ 8 16 24]  [32 40 48]]

    m2: [[1 2 3]  [4 5 6]  [7 8 9]]

    m1 * m2: [[30 36 42]  [66 81 96]] [[-4.50359963e+15  9.00719925e+15 -4.50359963e+15]  [ 9.00719925e+15 -1.80143985e+16  9.00719925e+15]  [-4.50359963e+15  9.00719925e+15 -4.50359963e+15]]  


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