The function $f \colon \mathbb{R} \to \mathbb{R}$ is defined by $f(x)=\frac{x^2+2x}{x^2-1}$.
How would you show that $f(x)$ is a strictly decreasing function.
The function $f \colon \mathbb{R} \to \mathbb{R}$ is defined by $f(x)=\frac{x^2+2x}{x^2-1}$.
How would you show that $f(x)$ is a strictly decreasing function.