题目总述：
9.1：
解题代码如下：
运行结果截图：
(A、B)
(A+A)
(A·AT、AT·A)
(A·B)
9.2:
解题代码如下：
运行结果为：
[[0.31024484 0.1599813 0.33504287 ... 0.2919728 0.52820903 0.15987194]
[0.35693174 0.31024484 0.1599813 ... 0.59338411 0.2919728 0.52820903]
[0.75461613 0.35693174 0.31024484 ... 0.38884234 0.59338411 0.2919728 ]
...
[0.15631776 0.57102185 0.82003107 ... 0.31024484 0.1599813 0.33504287]
[0.92861607 0.15631776 0.57102185 ... 0.35693174 0.31024484 0.1599813 ]
[0.49681445 0.92861607 0.15631776 ... 0.75461613 0.35693174 0.31024484]]
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0.28110966 0.71915491 0.28631643 0.65352295 0.5696531 0.1518465
0.03868914 0.61368784]
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2.20036429e-01 -3.26969223e-01 2.04410505e-01 -2.23105362e-02]
9.3:
解题代码如下：
运行结果截图：
9.4：
解题代码如下：
运行结果截图：
(只截取部分内容……)
9.5：
解题代码如下：
运行结果截图：
答：试运行了三个情况，根据随机得到的概率p得到的结果看，我们可以得知，当p增大时，最大奇异值也随之增大。
9.6：
解题代码如下：
运行结果截图：
以上，9.Numpy解题完成。