[線代] 左右反矩陣的疑問
http://imgur.com/a/REUgC
看了黃子嘉的講義+筆記
總覺得這個定理很自相矛盾....
前提. 只有方陣才同時有左、右反矩陣
然後. 這個定理A:mxn,然後在證左反=右反,
A: mxn 不是方陣,怎麼會同時有左右反呢?
到底在證什麼 D:
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