已知=(3,5,-2),0=(2,1,4),要使λ+μ与=(0,0,1)垂直,则常数λ与μ应满足关系()。
A . λ0=2μ
B . λ=μ
C . μ0=2λ
D . λ=-μ
[单选题]已知A=(3,5,-2),0B=(2,1,4),要使λA+μB与C=(0,0,1)垂直,则常数λ与μ应满足关系()。A . λ0=2μB . λ=μC . μ0=2λD . λ=-μ
[单选题]1/2,1,4/3,19/12,( )A.118/60 B.119/19 C.109/36 D.107/60
[单选题]1/2,1,4/3,19/12,( )A.133/60B.137/60C.107/60D.147/60
[单选题]1/2,1,4/3,19/12,______ ( )A.118/60B.119/19C.109/36D.107/60
[单选题]:1,2/3,5/9,1/2,7/15,4/9,( )。A.5/9B.3/5C.2/13D.3/7
[问答题]在线性空间R3中,已知向量a1=(1,2,1),a2=(2,1,4),a3=(0,-3,2),记V1={λa1+μa2|λ,μ∈R},V2={ka3|
[问答题]已知向量组α1=(1,2,-1,1),α2=(2,0,t,0),α3=(0,-4,5,-2)的秩为2,则t=----------.
[问答题]已知向量组α1=(1,2,-1,1),α2=(2,0,t,0),α3=(0,-4,5,-2)的秩为2,则t=------------.
[问答题]已知向量组α1=(1,2,-1,1),α2=(2,0,t,0),α3=(0,-4,5,-2)的秩为2,则t=-------------.
[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