Cubic Julia set

Illustration of the behavour of the series for points z₀ on the complex plane.

Each value of "c" gives a different fractal image, common value is -(0.5 + 0.05 i).

c = 0.5 + 0.5 i

c = 0.7 + 0.5 i

c = 0.53 + 0.1 i

c = 0.52 + 0.1 i

c = 0.515 + 0.1 i