tentukan matriks A jika (1 -4 A = (9 9 2 3) 7 -4)

Matrik Invers
A = [5...1||-1....-2].
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[tex] \left[\begin{array}{ccc}1&-4\\2&3\end{array}\right] \ A \ = \left[\begin{array}{ccc}9&9\\7&-4\end{array}\right] \\ A\ = \left \left[\begin{array}{ccc}1&-4\\2&3\end{array}\right]\right ^{-1}\ \left[\begin{array}{ccc}9&9\\7&-4\end{array}\right] \\ A \ = \frac{1}{(1(3) -2(-4)} \ \left \left[\begin{array}{ccc}3&4\\-2&1\end{array}\right]\right\ \left[\begin{array}{ccc}9&9\\7&-4\end{array}\right] \\ A\ = \frac{1}{11} \left[\begin{array}{ccc}55&11\\-11&-22\end{array}\right] [/tex]