/ 2 \ f(x) = x + log\x - 1/
/ 2\
___ ___ | / ___\ |
(-1 + \/ 2, -1 + \/ 2 + pi*I + log\1 - \-1 + \/ 2 / /) / 2\
___ ___ | / ___\ |
(-1 - \/ 2, -1 - \/ 2 + log\-1 + \-1 - \/ 2 / /)(-oo, -sqrt(2) - 1]
[-sqrt(2) - 1, oo)