Chapter 4 - Applications of the Derivative - 4.7 L'Hopital's Rule - 4.7 Exercises - Page 307: 10

This means that $$\lim\frac{f(x)}{g(x)}=c$$ where $c$ is any nonzero constant. ($c\in\mathbb{R}^+\cup\mathbb{R}^-$)

This means that when we take the limit of the ratio of those functions when $x\to\infty$ we get some nonzero constant as a result or:$$\lim\frac{f(x)}{g(x)}=c.$$