JEE MAIN - Mathematics Hindi (2017 (Offline) - No. 5)
यदि $$\mathrm{A}=\left[\begin{array}{rr}2 & -3 \\ -4 & 1\end{array}\right]$$ है, तो $$\mathrm{adj}$$ (3$$\mathrm{A}^{2}+12 \mathrm{A}$$) बराबर है :
$$\left[\begin{array}{ll}51 & 63 \\ 84 & 72\end{array}\right]$$
$$\left[\begin{array}{ll}51 & 84 \\ 63 & 72\end{array}\right]$$
$$\left[\begin{array}{rr}72 & -63 \\ -84 & 51\end{array}\right]$$
$$\left[\begin{array}{rr}72 & -84 \\ -63 & 51\end{array}\right]$$