If matrix A= [ ll 2 & 3 1 & 4 ] then find adjoint matrix (adj A). - Vidyadip

Question

If matrix $A=\left[\begin{array}{ll}2 & 3 \\ 1 & 4\end{array}\right]$ then find adjoint matrix $(\operatorname{adj} A)$.

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Answer

Adjoint of $A:$ $\left[\begin{array}{cc}4 & -3 \\ -1 & 2\end{array}\right]$

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