设向量组(Ⅰ):α1=(a11,a12,a13),α2=(a21,a22,a23),α3=(a31,a32,a33);向量组(Ⅱ):β1=(a11,a12,a13,a14),β2=(a21,a22,a23,a24),β3=(a31,a32,a33,a34),则正确的命题是()
A: (Ⅰ)相关(Ⅱ)相关.
B: (Ⅰ)无关(Ⅱ)无关.
C: (Ⅱ)无关(Ⅰ)无关.
D: (Ⅱ)相关(Ⅰ)无关.
A: (Ⅰ)相关(Ⅱ)相关.
B: (Ⅰ)无关(Ⅱ)无关.
C: (Ⅱ)无关(Ⅰ)无关.
D: (Ⅱ)相关(Ⅰ)无关.
举一反三
- 设向量组(I):α1=(a11,a12,a13),α2=(a21,a22,a23),α3=(a31,a32,a33);向量组(Ⅱ):β1=(a11,a12,a13,a14),β2=(a21,a22,a23,a24),β3=(a31,a32,a33,a34,),则正确的命题是( ) A: (I)相关→(Ⅱ)无关. B: (I)无关→(Ⅱ)无关. C: (Ⅱ)无关→(I)无关. D: (Ⅱ)相关→(I)无关.
- 用3×3的布尔矩阵表示集合A={2,3,4}上的整除关系: a11= ,a12= ,a13= , a21= ,a22= ,a23= , a31= ,a32= ,a33= .
- 表达式for(iA.11;12;13;21;22;23;31;32;33B.11;13;21;23;31;33C.12;13;21;23;31;32D.11;12;21;22;31;32
- 用表上作业法求最优方案[img=1033x232]17e447cdd0cc8a4.png[/img]x11=____,x12=_____,x13=_____,x14=_____,x21=_____,x22=_____,x23=_______,x24=______,x31=_____,x32=______,x33=_______,x34=________,σ11=______,σ12=____,σ13=______,σ14=____,σ21=_____,σ22=______,σ23=______,σ24=_____,σ31=______,σ32=______,σ33=______,σ34=______
- 若向量组α1,α2,α3线性无关,则向量组β1=2α1+α2+α3,β2=3α2+α3,β3=-4α3线性 (填“相关”或“无关”)。