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If A,B are square matrices of order 3 , ...

If A,B are square matrices of order 3 , then :

A

adj (AB) = (adj. A ) (adj . B)

B

`(A+B)^(-1) = A^(-1) +B^(-1)`

C

`AB = O = rArr |A| = 0 or |B|= 0 `

D

`AB = O rArr |A| = 0 and |B| = 0 `

Text Solution

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The correct Answer is:
B
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