[線代] rank問題
請問rank的數量是用列還是行來看?
我一直以為是看不為零的列數有幾個
但是linearly independence的條件又說rank A=n (假設A為m*n的矩陣)
但是如果n>m rank怎麼會=n呢?
rank A不是會小於等於m,n嗎?
如果rank A=n>m 就不合了吧?
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03/09 00:56, , 1F
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