$$\left. \begin{array} { l } { \quad \frac { ( x + 1 ) ( x - 3 ) } { ( x - 1 ) ( x + 2 ) } \lt 1 } \\ { \text { ( 2 ) S o l v e t h e i n c e q u a l i t y : \right.$$
$x\in \left(-2,-\frac{1}{3}\right)\cup \left(1,\infty\right)$
