設(shè)A為m×n矩陣，齊次線性方程組Ax=0有非零解的充分必要條件是
（單選題）下列說法正確的是
（單選題）有等式AB=0?，則下列結(jié)論中正確的是（）
設(shè)A為m×n矩陣，齊次線性方程組Ax=0有非零解的充分必要條件是
???????
（單選題）
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線性相關(guān)性概念
考察線性相關(guān)和線性無關(guān)的概念，以及和行列式值的關(guān)系
多做幾道
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