Practice problem
What is A−1A^{-1}A−1?
[3−5−12]\begin{bmatrix} 3 & -5 \\ -1 & 2 \end{bmatrix}[3−1−52]
[3512]\begin{bmatrix} 3 & 5 \\ 1 & 2 \end{bmatrix}[3152]
[120−121]\begin{bmatrix} \frac{1}{2} & 0 \\ -\frac{1}{2} & 1 \end{bmatrix}[21−2101]
[−215−3]\begin{bmatrix} -2 & 1 \\ 5 & -3 \end{bmatrix}[−251−3]
AAA is not invertible.
Type a concept, like “slope” or “photosynthesis”.