[理工] [線代]-雲科98-資工所
Let AX = B be a system of n linear equations in n variables.Prove
(b) If |A| = 0 there may be many or no solutions.
我的證明是:
|A| = 0 <=> rank(A) < n , A 不可能是 唯一解
<=> A 至少有一個自由變數 => 有一個以上的解
那無解要怎麼寫比較好??
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