Does for $f(x) \rightarrow 0$ always $\frac{a}{f(x)}$ converge to $\pm \infty$?

43 Views Asked by At

So I was wondering. Let $f:\mathbb{R} \supseteq U \rightarrow \mathbb{R} $ be a function and $p \in \mathbb{R} \cup \left\{ - \infty, +\infty \right\}$ such that

$$\lim_{x \rightarrow p} f(x) = 0$$

Does it now hold that $$\forall a \in \mathbb{R}\setminus \left\{ 0\right\}: \lim_{x \rightarrow p} \frac{a}{f(x)} = \pm \infty$$

That is, the limit $\lim_{x \rightarrow p} \frac{a}{f(x)}$ goes either to infinity or to minus infinity.