NCERT Solutions
Class 12 - Mathematics Part-1 - Chapter 3: MATRICESExercise 3.4
Class 12 - Mathematics Part-1 - Chapter 3: MATRICES
Question. 1
Matrices \(A\) and \(B\) will be inverse of each other only if
(A) \(AB = BA\)
(B) \(AB = BA = 0\)
(C) \(AB = 0,\; BA = I\)
(D) \(AB = BA = I\)
Answer:
(D)