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For invertible matrices A and B of the same order, (AB) inverse equals:
A(A'B')⁻¹
BA⁻¹ + B⁻¹
CA⁻¹B⁻¹
DB⁻¹A⁻¹
Answer & Solution
Correct answer: D. B⁻¹A⁻¹
The inverse of a product reverses the factors, so (AB)⁻¹ = B⁻¹A⁻¹.
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