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(a)If every cloumn of an augmented matrix contains a pivot, then the corresponding system is consistent. (b)If linear system Ax=b is inconstent for some b, then A cannot have a pivot position in every row. 這是之前的期中考試題, 能不能請高人指點一下呢? -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.37.32.26
xling5216 :我的想法是 Ramk(A)!=Rank(A|b) => 無解 02/12 23:59
xling5216 :(b)小題可以簡單看出不會每一列都有pivot 02/13 00:02