If A=\left[\begin{array}{cc}4 & 11 \ 2 & 6]\end{array}, then A^{-1} is equal to

Correct Answer is : [3−112−12]

\left[\begin{array}{cc}-1 & \\\{-11\end\frac{array}{2} ; 3 , 2]}

\left[\begin{array}{cc}3 & \\\{-11\end\frac{array}{2} ; -1 , 2]}

\left[\begin{array}{cc}3 & 2 \ -1 & -11 \ 2]\end{array}

CGPET 2014 Solved Paper

Section: Mathematics

Question : 121 of 150

Marks: +1, -0

If A=[

4	11
2	6

], then A−1 is equal to

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6	−11
−2	4

6	−11
−2	4