numpy线性代数部分笔记

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import numpy as np
arr1 = np.array([10,20,15],[30,40,20],[10,15,10])
arr2 = np.array([[2000,3000,2500,2000],[2800,4800,3700,3000],[2500,3500,4000,2000]])
result = np.dot(arr1,arr2)
np.linalg.det(result)