Q70. If the domain of the function $f ( x ) = \sin ^ { - 1 } \left( \frac { x - 1 } { 2 x + 3 } \right)$ is $\mathbf { R } - ( \alpha , \beta )$, then $12 \alpha \beta$ is equal to : (1) 32 (2) 40 (3) 24 (4) 36
Q70. If the domain of the function $f ( x ) = \sin ^ { - 1 } \left( \frac { x - 1 } { 2 x + 3 } \right)$ is $\mathbf { R } - ( \alpha , \beta )$, then $12 \alpha \beta$ is equal to :\\
(1) 32\\
(2) 40\\
(3) 24\\
(4) 36