For Exercises $21-30,$ use the gruph of $T$ to find each limit$.$ If necessary, state that the limit does not exist.

$21.$ Find $\underset{x-3^{-}}{lim}T(x)22.$ Find $\underset{x-3^{+}}{lim}{T}^{}(x)$

$23.$ Find $\underset{x-3}{lim}T(x)$

$24.$ Find $\underset{x{0}^{-}}{lim}T(x)$

$25.$ Find $\underset{x{0}^{+}}{lim}T(x)$

$26.$ Find $\underset{x0}{lim}T(x)$

$27.$ Find $\underset{x-1^{-}}{lim}T(x)$

$28.$ Find $\underset{x-1^{+}}{lim}T(x)$

$29.$ Find $\underset{x-1}{lim}T(x)$

$30.$ Find $\underset{x}{lim}T(x)$

If the limit does not exist, use "DNE". Use "infty" for infinity value