A.-7 B.-9 C.-11 D.-13
[单选题]:-1,0,-3,-2,-5,-4,()。A.-7 B.-9 C.-11 D.-13
[单选题]:1,0,-1/3,0,1/5,0,( ),0A.-1/7B.5/3C.3/5D.1/7
[单选题]:1,0,-1,-2,( )。A.-8 B.-9 C.-4 D.3
[主观题]1,0,-1,-2,()A.-8;B.-9;C.-4;D.3;
[试题]1,0,-1,-2,()A.-8;B.-9;C.-4;D.3;
[单选题]-1,0,-1,-1,( ),-3A.-2B.2C.-3D.3
[单选题]:-1,0,-1,-1,( ),-3( )A.-2B.2C.-3D.3
[单选题]-1,0,-1,-1,( ),-3A.-2 B.2 C.-3 D.3
[单选题]-1,0,-1,-1,( ),-3( )A.-2B.2C.-3D.3
[问答题]向量组α1=(1,0,1,2),α2=(0,1,2,1),α3=(-2,0,-2,-4),α4=(0,1,0,1),α5=(0,0,0,-1),则向量