apachecn / apachecn/mit-18.06-linalg-notes
第三讲：乘法和逆矩阵
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Description
逆（方阵）
第七行，“如果A乘以任意非零向量能够得到0向量，则矩阵A不可逆”，应该改为“如果存在非零向量x，使得Ax=0，则矩阵A不可逆”
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Research direction
Locate the 第三讲：乘法和逆矩阵 notes and find the seventh line in the section on inverse square matrices. Update the statement to use the existence of a nonzero vector x with Ax=0, then review the surrounding text to ensure the correction reads naturally.
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