Domain: All real $x,$ except $x=-1$ and $x=1 ;$
$f(-2)=1, f(0)=0, f(2)=1$
$f^{\prime}(x)>0$ on $(-\infty,-1)$ and (0,1)
$f^{\prime}(x)<0$ on (-1,0) and $(1, \infty)$
$f^{\prime \prime}(x)>0$ on $(-\infty,-1),(-1,1),$ and $(1, \infty)$
vertical asymptotes: $x=-1$ and $x=1 ;$
horizontal asymptote: $y=0$