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※ 引述《milicic2103 (神)》之銘言: : (87年北科大通訊) : If a linear system Ax=b has more than one solution, more than one => rank(A|b) = rank(A) < dim(A) So there is at least one row can span from the other rows. : then so does the system Ax=0 The solution you can image such x1=a, x2=b, x3 (- R because A can reduce to two rows. : 答案是 true : 有大大可以解釋一下嗎? 我不知道從哪推起 沒想法 There is another way, b also can be 0 . So Ax=b has more than one solution even if b=0 . -- 相簿內有一批資工用書 好便宜的阿... http://www.wretch.cc/album/chris750630 有需要就給個留言吧... -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 219.71.209.172