Use a graphing tool, such as Desmos graphing calculator, to determine the left- and right-hand limits of f (x) as a approaches 1. If f (a) has a limit as a approaches 1, state it. 2 - 1, if x * 1 f (20 ) = 23 if x = 1 If the limit does not exist, enter DNE. lim f (x) = x-1- lim f (x) = x-17 lim f (x) = P x-+1