Let $f(x) = \begin{cases} 6-x-x^2, &\text{if}\ x\leq 2\\ 2x-1, &\text{if}\ x> 2 \end{cases}$
Calculate the following limits. Enter DNE if the limit does not exist.
$\displaystyle{\lim_{x\to 2^-}f(x)=}$
$\displaystyle{\lim_{x\to 2^+}f(x)=}$
$\displaystyle{\lim_{x\to 2}f(x)=}$