仅需要注意的是， 线性相关说的是存在性：就至少存在一个 k_i \ne 0,使得 k_1a_1+\dots+k_ia_i+\dots+k_sa_s=0。 线性无关说. 自21年考研数学改革以来, 线性代数 里的 抽象矩阵 含量飞速上升, 除了举特例和老老实实分析没啥好办法. 给出一个 矩阵或 分块矩阵, 需要会从 纯计算的角度 分析, 从 行列式的角度 分析, 从.
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