Answer
See graph
Work Step by Step
Sketch of a possible graph for a function \( f \) satisfying
\[
\begin{cases}
f(-1) = 0,\quad f(0) = 1,\quad f(1) = 0, \\[6pt]
\displaystyle \lim_{x \to -1^-} f(x) = 0,
\quad \lim_{x \to -1^+} f(x) = +\infty, \\[8pt]
\displaystyle \lim_{x \to 1^-} f(x) = 1,
\quad \lim_{x \to 1^+} f(x) = +\infty.
\end{cases}
\]
