[问卦] 问个线代==

楼主: qweraakk (举世皆浊)   2022-04-24 01:05:33
小弟我明天期中考啦 然后也没朋友可以问
请问有没有乡民可以教我QQ
Explain why the columns of n ×n matrix A span R^n when A is invertible.

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