Practice problem
Fix a∈Ra \in \mathbb{R}a∈R and a real-valued function fff. If limx→a−f(x)=∞\lim_{x \to a^-}f(x) = \inftylimx→a−f(x)=∞, then what is f(a)f(a)f(a)?
∞\infty∞
Undefined
000
f(a)f(a)f(a) could be any real number or undefined
Type a concept, like “slope” or “photosynthesis”.