only answer b

15 10 5- -10 -8 -6 -4 -2 0 2 4 6 8 X a) Give the left and right limits of this functions at the various points specified. Write "inf" for oo and "-inf" for -co. lim f = inf lim f = -inf 20- - 3+ lim f = 2 xx-3 lim f = -3 P b) At which of the following values of a does the limit of f exist? The choices are -8; -3; 0, 3; 5