Matrices A and B will be inverse of each...

Matrices A and B will be inverse of each other only if (A) `A B" "=" "B A` (B) `A B" "=" "B A" "=" "0` (C) `A B" "=" "0," "B A" "=" "I` (D) `A B" "=" "B A" "=" "I`

A

`AB=BA`

B

`AB-BA=O`

C

`AB=O,BA=I`

D

`AB=BA=I`.

Text Solution

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The correct Answer is:

D

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