Find the indicated one$-$sided limits of $f,$ and determine the continuity of $f$ at the indicated point. You should also sketch a graph of $y=f(x),$ including hollow and solid circles in the appropriate places.

NOTE: Type DNE if a limit does not exist.

$\underset{x-1^{-}}{lim}f(x)=$

$\underset{x-1^{+}}{lim}f(x)=$

$\underset{x-1}{lim}f(x)=$

$f(-1)=$

$$

$$

Is $f$ continuous at $x=-1?$

$($YES$/$NO$)$