Find the set of values zzz such that z3=zˉ3z^3 = \bar{z}^3z3=zˉ3.
The real axis only
The real axis, the imaginary axis, and the lines y=±3xy = \pm\sqrt{3}xy=±3x
The real axis and the lines y=±xy = \pm xy=±x
The imaginary axis and the unit circle