(a) $\frac{x + 11}{x - 3} > 0$ $\Rightarrow \ \ (x - 3)(x + 11) > 0$ $\Rightarrow \ \ \ x < - 11,\ x > 3$ $\Rightarrow \ \ x \in ( - \infty,\ - 1) \cup (3,\ \infty)$
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.