Which of the following is not a property of invertible matrices if A and B are matrices of the same order?

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answerhappygod
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Which of the following is not a property of invertible matrices if A and B are matrices of the same order?

Post by answerhappygod »

a) (AB)-1=A-1 B-1
b) (AA-1)=(A-1 A)=I
c) (AB)-1=B-1 A-1
d) AB=BA=I
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