Let A=⎡⎢⎣1−21−231115⎤⎥⎦ (A−1)−1=A – InterviewSolution

1.

Let A=⎡⎢⎣1−21−231115⎤⎥⎦ (A−1)−1=A

Answer»

Let $A = ⎡ ⎢ ⎣ \begin{matrix} 1 & - 2 & 1 - 2 & 3 & 1 1 & 1 & 5 \end{matrix} ⎤ ⎥ ⎦$

$(A^{- 1})^{- 1} = A$

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