A.0
B.2
C.4
D.6
计算下列行列式:-|||-0 0 0 1 -1 2-|||-0 0 0 3 0 2-|||-0 0 0 2 4 0-|||-0 0 1 2 0 4-|||-0
0 2 4 0-|||-2 0 0 -3-|||--1 2 1 0-|||-0 3 0 1且第三行元素的代数余子式为0 2 4 0-|||-2 0 0 -3-|
设(5)-1 3-|||-4= 0 -2 0-|||-0 7 -1,(5)-1 3-|||-4= 0 -2 0-|||-0 7 -1,(5)-1 3-|||-4
28.求下列矩阵的逆矩阵:-|||-(1) 5 2 0 0 2 1 0 0 0 0 8 3 0 0 5 2 -|||-(2) 0 0 1/5 2 1 0 4
矩阵0 1 0-|||-1 2 3-|||-2 3 4,则0 1 0-|||-1 2 3-|||-2 3 4。0 1 0-|||-1 2 3-|||-2 3 4
设1 0 0 0-|||-A= -2 3 0 0-|||-0 -4 5 0-|||-0 0 -6 7,1 0 0 0-|||-A= -2 3 0 0-|||-0
[题目]-|||-设A= 3 4 0 0 4 -3 0 0 0 0 2 0 0 0 2 2 求|A^8|及A^4.
计算下列行列式:4 3 2 1-|||-_(1)= 2 -2 0-|||-3 2 1 0-|||--4 0 0;4 3 2 1-|||-_(1)= 2 -2 0
[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
[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