题目
设 alpha_(1)=(1,-1,2,4)，alpha_(2)=(0,3,1,2)，alpha_(3)=(3,0,7,14)，alpha_(4)=(1,-2,2,0)，alpha_(5)=(1,2,3,6)，则向量组 alpha_(1),alpha_(2),alpha_(3),alpha_(4),alpha_(5) 的最大无关组是（）A. alpha_(1),alpha_(2),alpha_(3)B. alpha_(1),alpha_(2),alpha_(4)C. alpha_(1),alpha_(2),alpha_(5)D. alpha_(1),alpha_(2),alpha_(4),alpha_(5)
设 $\alpha_{1}=(1,-1,2,4)$，$\alpha_{2}=(0,3,1,2)$，$\alpha_{3}=(3,0,7,14)$，$\alpha_{4}=(1,-2,2,0)$，$\alpha_{5}=(1,2,3,6)$，则向量组 $\alpha_{1},\alpha_{2},\alpha_{3},\alpha_{4},\alpha_{5}$ 的最大无关组是（）
A. $\alpha_{1},\alpha_{2},\alpha_{3}$
B. $\alpha_{1},\alpha_{2},\alpha_{4}$
C. $\alpha_{1},\alpha_{2},\alpha_{5}$
D. $\alpha_{1},\alpha_{2},\alpha_{4},\alpha_{5}$
题目解答
答案
B. $\alpha_{1},\alpha_{2},\alpha_{4}$