A) \[{{A}^{-2}}\]
B) \[A+I\]
C) \[I-A\]
D) \[A-I\]
Correct Answer: C
Solution :
\[{{A}^{2}}-A+I=0\] Þ \[I=A-{{A}^{2}}\Rightarrow \]\[I=A(I-A)\] Þ \[{{A}^{-1}}I={{A}^{-1}}(A(I-A))\] \[\Rightarrow \] \[{{A}^{-1}}=I-A\].You need to login to perform this action.
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