I've looked in my notes and searched online for an epsilon-delta styled definition of the limit
$\lim_{x \to +\infty} f(x) = -\infty$
I've only found the definitions in the lines of
$\forall M < 0$ $\exists N > 0 : f(x) < M$ $\forall x > N$
How do I write an epsilon-delta definition of the limit above? I tried changing M to $\epsilon$ but I haven't known of an $\epsilon$ smaller than zero in real analysis.