Mr.Henderson was determined to remain ().He neither stood on his wife's side nor on his mother's side.
A.natural
B.neutral
C.nervous
D.native
A.natural
B.neutral
C.nervous
D.native
设3阶方阵A、B的行列式分别为det(A)=2,det(B)=3,则det(-2A-1B*)=
A.A=[7,8,1;1,3,0;2,1,0];det(A)
B.A=[7,8,1;1,3,0;2,1,0];det[A]
C.A=[7,8,1;1,3,0,2,1,0];det(A)
D.A={7,8,1;1,3,0,2,1,0};det(A)
A.A=[0,-2,5,0;-2,3,0,-1;0,1,2,4;1,4,2,0];det(A)
B.A=[0,-2,5,0,-2,3,0,-1,0,1,2,4,1,4,2,0];det(A)
C.A=[0,-2,5,0;-2,3,0,-1;0,1,2,4;1,4,2,0];det[A]
D.A={0,-2,5,0;-2,3,0,-1;0,1,2,4;1,4,2,0};det[A]
A.A=[-3,0,1;4,0,0;2,5,0];det(A)
B.A=[-3,0,1;4,0,0;2,5,0];det[A]
C.A=[-3,0,1,4,0,0,2,5,0];det(A)
D.A=[-3,0,1,4,0,0,2,5,0];det[A]
A.det(B)=det(A)
B.det(B)=-det(A)
C.det(B)=det(-A)
D.det(-B)=det(A)
A.A=[1,2,0;0,-1,2;3,-2,1];det(A)
B.A=[1,2,0,0,-1,2,3,-2,1];det(A)
C.A=[1,2,0;0,-1,2;3,-2,1];det[A]
D.A={1,2,0;0,-1,2;3,-2,1};det[A]
A.A=[1,-2,0;1,-1,0;1,-2,1];det(A)
B.A=[1,-2,0;1,-1,0;1,-2,1];det[A]
C.A=[1,1,1;-2,-1,-2;0,0,1];det(A)
D.A={1,1,1;-2,-1,-2;0,0,1};det(A)
A、AAT =ATA.
B、det(AAT ) = det(AT A).
C、if det(A) = 0, then A is invertible.
D、if det(A) = 0, then AT is invertible.
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