Find the Adjoint of matrix A = [ array ccc 1 & 1 & 1 2 & 1 & -3 -1 & 2 & 3 array ]
Mathematics · JEE Main · NTA Exams — Matrices and Determinants
Find the Adjoint of matrix A = \[\left[\begin{array}{ccc}
1 & 1 & 1 \\
2 & 1 & -3 \\
-1 & 2 & 3
\end{array}\right]\]
- \(\left[\begin{array}{crr} 9 & -1 & -4 \\ -3 & 4 & 5 \\ 5 & -3 & -1 \end{array}\right]\)
- \(\left[\begin{array}{ccc} 9 & -1 & 4 \\ 3 & 4 & 5 \\ -5 & 3 & 1 \end{array}\right]\)
- \(\left[\begin{array}{crr} 6 & -1 & -4 \\ 3 & 4 & 5 \\ -5 & -3 & -1 \end{array}\right]\)
- None of these
Answer
(A) [ array crr 9 & -1 & -4 -3 & 4 & 5 5 & -3 & -1 array ]
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