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Question
If A and B are invertible matrices of the same order, then (AB)-1 is equal to ____________.
Options
`"A"^-1 "B"^-1`
`"B"^-1 "A"^-1`
`"AB"^-1`
`"A"^-1 "B"`
MCQ
Fill in the Blanks
Solution
If A and B are invertible matrices of the same order, then (AB)-1 is equal to `underline("B"^-1 "A"^-1)`.
Explanation:
By the inverse property, (AB)-1 equals B-1A-1.
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