Evaluate the limits. Enter DNE if the limit does not exist.

a) $\displaystyle \lim_{x \to b^-} q(x)$ =

b) $\displaystyle \lim_{x \to b^+} q(x)$ =

c) $\displaystyle \lim_{x \to b} q(x)$ =

d) $\displaystyle q(b)$ =