If A = begin{bmatrix} -2 & 6 -5 & 7 end{bmat | vedclass

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Question

(A) For a $2 	imes 2$ matrix $A = \begin{bmatrix} a & b \ c & d \end{bmatrix}$,the adjoint of $A$ is given by $adj(A) = \begin{bmatrix} d & -b \ -c

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$\begin{bmatrix} 7 & -6 \ 5 & -2 \end{bmatrix}$

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(A) For a $2 	imes 2$ matrix $A = \begin{bmatrix} a & b \ c & d \end{bmatrix}$,the adjoint of $A$ is given by $adj(A) = \begin{bmatrix} d & -b \ -c & a \end{bmatrix}$.Given $A = \begin{bmatrix} -2 & 6 \ -5 & 7 \end{bmatrix}$,we have $a = -2, b = 6, c = -5, d = 7$.Therefore,$adj(A) = \begin{bmatrix} 7 & -6 \ -(-5) & -2 \end{bmatrix} = \begin{bmatrix} 7 & -6 \ 5 & -2 \end{bmatrix}$.Thus,the correct option is $A$.

If $A = \begin{bmatrix} -2 & 6 \\ -5 & 7 \end{bmatrix}$,then find $adj(A)$.

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