A=\left[ \begin{array}{ccc}{0} & {0} & {-1} \\ {0} & {-1} & {0} \\ {-1 – InterviewSolution

1.	A=\left[ \begin{array}{ccc}{0} & {0} & {-1} \\ {0} & {-1} & {0} \\ {-1} & {0} & {0}\end{array}\right]then show thatIA^2=I also find A^-1
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