A) \[{{A}^{2}}\]
B) A
C) \[{{A}^{3}}\]
D) None of these
Correct Answer: A
Solution :
\[{{A}^{3}}=I\] \[\Rightarrow \] \[A.{{A}^{2}}=I\] \[\Rightarrow \] \[{{A}^{-1}}A.{{A}^{2}}={{A}^{-1}}\] \[\Rightarrow \] \[{{A}^{2}}={{A}^{-1}}\]You need to login to perform this action.
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