Published by:
CGP EDU Academic Team
Published on: August 12, 2026
Let A = 
be a matrix, then (det A ) x (adj A – 1 ) is equal to
A
O 3 × 3
B
Ι 3
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
| A | · (adj (A – 1 )) = | A | (|A – 1 | · (A – 1 ) – 1 ) = | A A – 1 | · A = A.
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