Let $f:\mathbb{R} \to \mathbb{R}$ be defined by $$f(x) = \frac{{{x^2} – 3x – 6}}{{{x^2} + 2x + 4}}$$ Then which of the following statements is (are) TRUE?
(A) f is decreasing in the interval (-2, -1)
(B) f is increasing in the interval (1, 2)
(C) f is onto
(D) Range of f is $\left[ { – \frac{3}{2},2} \right]$ Continue reading Let $f:\mathbb{R} \to \mathbb{R}$ be defined by ….