## Calculus Concepts: An Informal Approach to the Mathematics of Change 5th Edition

a) The function increases indefinitely when $u$ goes to $0$ and the function decreases indefinitely when $u$ increases (without bound). b) $\lim\limits_{u \to 0}=+\infty$ and $\lim\limits_{u \to +\infty}=-\infty$ c) There isn't a horizontal asymptote.