4. [-/6.66 Points] DETAILS TANAPCALC9 2.5.002. Use the graph of the function f to find the limits at the indicated value of a, if the limit exists. (If an answer does not exist, enter DNE.) lim f (x) = r-+a lim f (x) = I-at lim f (x) = y = f(x) - NWAU 1 2 3 4 5 6 a=3