CUET and UG exam CUET UG 2025 Mock Test Series Engineering Mathematics Linear Algebra Matrix Algebra
যদি \(A = \frac {1}{3} \left( {\begin{array}{*{20}{c}} 1&{2}&2\\ 2&{1}&{-2}\\ -2&2&{-1} \end{array}} \right)\) হয়, তাহলে (AAT)-1 = ?
1
I
2
5I
3
3I
4
-3I