A.13/4
B. –16/5
C.-13/4
D.16/5
[单选题]-1 1 -4/3 2 ( ) 16/3A.13/4 B. –16/5 C-13/4 D.16/5
令1 1 1 1-|||-1 2 4 16-|||-1 3 9 27-|||-1 4 16 64,设1 1 1 1-|||-1 2 4 16-|||-1 3 9
[单选题]1,2,1/2,-3/4,-5/8,1/16,()A.11/32B.1/8C.1/4D.1/2
[单选题]1,2,1/2,-3/4,-5/8,1/16,()A.11/32B.1/8C.1/4D.1/2
设2 -2 -4 2 -3 -5-|||-A= -1 3 4 B= -1 4 5-|||-1 -2 -3 1 -3 -4(1)验证2 -2 -4 2 -3 -5
设2 -2 -4-|||-= -1 3 4-|||-1 -2 -3,2 -2 -4-|||-= -1 3 4-|||-1 -2 -3,且2 -2 -4-|||-
已知矩阵A= 1 -1 1 2 2 3 3 2 3 2 4 4 ,则矩阵秩A= 1 -1 1 2 2 3 3 2 3 2 4 4 =__________A
设行列式1 -2 3 1-|||-4 -1 4 -2-|||-3 2 0 2-|||-3 -2 3 1,求1 -2 3 1-|||-4 -1 4 -2-|||-
[单选题]2/3,1/4,2/5,(),2/7,1/16,A.1/5;B.1/17;c.1/22;d.1/9
[单选题]2/3,1/4,2/5,(),2/7,1/16,A.1/5;B.1/17;C.1/22;D.1/9;