二向量组的线性相关性 1.线性组合 anxi+anxi+.+aimxm=bl 考察方程组41x+a2+…+a2mxm=b2 anIx+anxi+.tanmxm=bn a1x1+a12x2+…+ aimme 看成向量有421x1+02+…+0mxm=b2 an1x1+an2x2+…+amxm」Lb K图心二.向量组的线性相关性 1. 线性组合 考察方程组        + + + = + + + = + + + = a x a x a x b a x a x a x b a x a x a x b n n nm m n m m m m     1 1 2 2 2 1 1 2 2 2 2 2 1 1 1 1 2 2 1 1 看成向量有 2 1 1 1 2 2 2 1 1 2 2 2 2 1 1 1 1 2 2 1             =               + + + + + + + + + b b b a x a x a x a x a x a x a x a x a x n n nm m n m m m m     