A) \[(AB{)}'={A}'{B}'\]
B) \[(AB{)}'={B}'{A}'\]
C) \[{{A}^{-1}}=\frac{adj\,A}{A}\]
D) \[{{(AB)}^{-1}}={{A}^{-1}}{{B}^{-1}}\]
Correct Answer: B
Solution :
It is obvious.
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