In Exercises 1-5, use the graph of the function f to estimate the limit if it exists. Write too if the limit is immeasurably large, -co if immeasurably small, and DNE if the limit does not exist. (Note: The broken green lines are asymptotes.)4. (a) lim f(x) x- -2 (b) lim f(x) x--21 No (c) lim f(x) x-+2 (d) limf (x) -4 -3 -217 3 4 x-2 -3 5. (a) lim f(x) x--2 (b) lim f(x) 4 (c) lim f(x) x-2 (d) limf (x) x-+2' -2 -1 O 1 2 3 4 5 6 -2 -3