MCQ
If $A=\left[\begin{array}{cc}2 & -3 \\ 3 & 5\end{array}\right]$, then adjoint of matrix $A$ is .....
  • A
    $\left[\begin{array}{cc}1 & 3 \\ -4 & 1\end{array}\right]$
  • B
    $\left[\begin{array}{cc}1 & -3 \\ -4 & 2\end{array}\right]$
  • C
    $\left[\begin{array}{cc}1 & 3 \\ 4 & -2\end{array}\right]$
  • D
    $\left[\begin{array}{cc}-1 & -3 \\ -4 & 2\end{array}\right]$

Answer

$A=\left[\begin{array}{cc}2 & -3 \\ 4 & 1\end{array}\right]$
then adjoint of matrix A
$\operatorname{adj} A=\left[\begin{array}{cc}1 & 3 \\ -4 & 2\end{array}\right]$

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