If A=\(\begin{bmatrix}-8&2\\6&-3\end{bmatrix}\) and B=\(\begin{bmatrix}2&1\\1&7\end{bmatrix}\). Find (AB)-1.
Posted: Wed Jul 13, 2022 8:07 pm
a) –\(\frac{1}{432}\) \(\begin{bmatrix}-27&6\\9&14\end{bmatrix}\)
b) \(\frac{1}{432}\) \(\begin{bmatrix}27&6\\9&14\end{bmatrix}\)
c) \(\frac{1}{432}\) \(\begin{bmatrix}-27&6\\9&14\end{bmatrix}\)
d) \(\frac{-1}{432}\) \(\begin{bmatrix}27&6\\9&14\end{bmatrix}\)
b) \(\frac{1}{432}\) \(\begin{bmatrix}27&6\\9&14\end{bmatrix}\)
c) \(\frac{1}{432}\) \(\begin{bmatrix}-27&6\\9&14\end{bmatrix}\)
d) \(\frac{-1}{432}\) \(\begin{bmatrix}27&6\\9&14\end{bmatrix}\)