If A= ( array ll 2 & 2 9 & 4 array ) and I= ( array ll 1 & 0 0 & 1 array ) then 10 ~A ^…
Mathematics · JEE Main · NTA Exams — Matrices and Determinants
If \(A=\left(\begin{array}{ll}
2 & 2 \\
9 & 4
\end{array}\right)\) and \(I=\left(\begin{array}{ll}
1 & 0 \\
0 & 1
\end{array}\right)\) then \(10 \mathrm{~A}^{-1}\) is equal to:
- A - 4I
- A - 6I
- 4I - A
- 6I - A
Answer
(D) 6I - A
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