A) \[A\ne O\]
B) \[A=O\]
C) \[A=I\]
D) None of these
Correct Answer: B
Solution :
Since \[|B|\ne 0\Rightarrow {{B}^{-1}}\]exists, \ \[AB=0\] Þ \[(AB){{B}^{-1}}=O{{B}^{-1}}\Rightarrow \,\,A(B{{B}^{-1}})=O\] Þ \[AI=O\Rightarrow A=O\].
You need to login to perform this action.
You will be redirected in
3 sec
