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Question
If A, B are non-singular square matrices of the same order, then (AB–1)–1 = ______.
Options
A–1B
A–1B–1
BA–1
AB
Solution
If A, B are non-singular square matrices of the same order, then (AB–1)–1 = `underline(bb(BA^-1))`.
Explanation:
(AB–1)–1 = (B–1)–1A–1 = BA–1
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