Let f(x) = 1/x tan x/2 if 11 Then find each of the following limits or state that it does not exist. Furthermore, if the limit does not exist but diverges to , please indicate so, and determine the correct sign. (a) lim f(x); x0 (b) lim f(x); x0+ (c) limf(x). x0 (d) limf(x); x1