If A= ( ll 2 & -4 3 & 1 ), then the adjoint of matrix A is - Vidyadip

MCQ

If $A=\left(\begin{array}{ll}2 & -4 \\ 3 & 1\end{array}\right)$, then the adjoint of matrix $A$ is

A
$\left[\begin{array}{ll}-1 & 3 \\ -4 & 1\end{array}\right]$
✓
$\left[\begin{array}{rr}1 & 4 \\ -3 & 2\end{array}\right]$
C
$\left[\begin{array}{rr}1 & 3 \\ 4 & -2\end{array}\right]$
D
$\left[\begin{array}{rr}-1 & -3 \\ -4 & 2\end{array}\right]$

✓

Answer

Correct option: B.

$\left[\begin{array}{rr}1 & 4 \\ -3 & 2\end{array}\right]$

$\left[\begin{array}{rr}1 & 4 \\ -3 & 2\end{array}\right]$

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