If A−1=⎡⎢⎣1−1203100−1/3⎤⎥⎦, then

1.	If A−1=⎡⎢⎣1−1203100−1/3⎤⎥⎦, then
Answer» If $A^{- 1} = ⎡ ⎢ ⎣ \begin{matrix} 1 & - 1 & 2 0 & 3 & 1 0 & 0 & - 1 / 3 \end{matrix} ⎤ ⎥ ⎦,$ then

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