设向量0 1 2-|||-(alpha )_(1)= 1 _(2)= 1 ,beta = 1-|||--1 1 3，则0 1 2-|||-(alpha )_(1)= 1 _(2)= 1 ,beta = 1-|||--1 1 3中系数0 1 2-|||-(alpha )_(1)= 1 _(2)= 1 ,beta = 1-|||--1 1 3的取值为（）A 0 1 2-|||-(alpha )_(1)= 1 _(2)= 1 ,beta = 1-|||--1 1 3B 0 1 2-|||-(alpha )_(1)= 1 _(2)= 1 ,beta = 1-|||--1 1 3C 0 1 2-|||-(alpha )_(1)= 1 _(2)= 1 ,beta = 1-|||--1 1 3D0 1 2-|||-(alpha )_(1)= 1 _(2)= 1 ,beta = 1-|||--1 1 3

设 alpha (alpha )_(1),(alpha )_(2),(alpha )_(3),(beta )_(1),(beta )_(2) 均为四维列向量矩阵

9.设向量组α1,α 2,α3与向量组β1 β2,β3有如下关系:-|||-(beta )_(1)=(alpha )_(2)+(alpha )_(3) (bet

向量组1 0 1-|||-_(1)= 0 _(2)= 1 (alpha )_(3)= 1-|||-0 0 11 0 1-|||-_(1)= 0 _(2)= 1

设矩阵 =((alpha )_(1),(alpha )_(2),(alpha )_(3),(beta )_(1))，=((alpha )_(1),(alpha

3.设-1 1 2-|||-2 0 1-|||-0 1 3,-1 1 2-|||-2 0 1-|||-0 1 3的-1 1 2-|||-2 0 1-|||-0

8.若向量组α1,α2,α3线性无关, (beta )_(1)=(alpha )_(1)-(alpha )_(2), (beta )_(2)=(alpha )_

6.设α1,α2,α3线性无关, (beta )_(1)=a(alpha )_(1)+b(alpha )_(2) (beta )_(2)=a(alpha )_(

设1 2 4 0-|||-2 1 3 1-|||-1 0 2 -2-|||-__-|||-2 2 1 1，则1 2 4 0-|||-2 1 3 1-|||-1

beta_1 = alpha_1, beta_2 = alpha_1 + alpha_2, beta_3 = alpha_1 + alpha_2 + alpha

7.设alpha_(1),alpha_(2),alpha_(3),beta_(1),beta_(2)均为4维列向量，矩阵A=(alpha_(1),alpha_(