Question
Which of the following is not a property of invertible matrices if A and B are matrices of the same order?
Options :
(AB)⁻¹=A⁻¹ B⁻¹
(AA⁻¹)=(A⁻¹ A)=I
(AB)⁻¹=B⁻¹ A⁻¹
AB=BA=I
Answer :
(AB)⁻¹=A⁻¹ B⁻¹
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