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Inverse of matrix using elementary transformation
Inverse of a matrix
Finding inverse of a matrix using Elementary Operations
Ex 3.4, 18 (MCQ) You are here
Example 23
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Inverse of matrix using elementary transformation
Last updated at Aug. 9, 2021 by Teachoo
Ex3.4, 18 Matrices A and B will be inverse of each other only if A. AB = BA B. AB = BA = O C. AB = O, BA = I D. AB = BA = I Given that A & B will be inverse of each other i.e. A-1 = B & B-1 = A From (1) & (2) AB = BA = I So, the correct answer is D