2.设向量组_(1)=((1+a,1,1,1))^T, (alpha )_(2)=((2,2+a,2,2))^T,_(1)=((1+a,1,1,1))^T, (alpha )_(2)=((2,2+a,2,2))^T,问：何时它们线性相关？当线性相关时，求一个极大无关组，并把其余向量用该极大无关组线性表示

5、设有向量组 (alpha )_(1)=((1,1,2,3))^T , (alpha )_(2)=((1,-1,1,1))^T , (alpha )_(3)=

若向量组(alpha )_(1)=((1,1,1))^T (alpha )_(2)=((0,1,1))^T (alpha )_(3)=((0,0,1))^T能由

设向量(alpha )_(1)=((1,1,-1))^T (alpha )_(2)=((0,2,1))^T,(alpha )_(1)=((1,1,-1))^T

已知向量(alpha )_(1)=((1,2,1))^T, (alpha )_(2)=((2,3,a))^T, =((1,a+2,-2))^T，(alpha )

2.求向量组: (alpha )_(1)=((1,1,3,1))^T (alpha )_(2)=((-1,1,-1,3))^T, (alpha )_(3)=((

设向量组 _(1)=((1,2,3,3))^T, (alpha )_(2)=((1,-1,2,1))^T (alpha )_(3)=((1,1,0,1))^T,

设向量组 alpha_1=(6,lambda+1,4)^T, alpha_2=(lambda,2,2)^T, alpha_3=(lambda,1,0)^T 线性

设向量组 (alpha )_(1)=((0,1,1))^T, (alpha )_(2)=((1,0,1))^T (alpha )_(3)=((2,1,0))^T

设向量组 alpha_1 = (1,1,1), alpha_2 = (0,1,2), alpha_3 = (1,0,-1)，那么该向量组的秩为:A. 3B

设向量组 alpha_1 = (1,1,1), alpha_2 = (0,1,2), alpha_3 = (1,0,-1)，那么该向量组的秩为:A. 2B