Green Flag Julia Set (i * Z) ^ 2 + 0.24-0.85i rotated 90 degrees gives Julia Set Z ^ 2-0.85-0.24i
i*Z=-y+ix i*Z=|Z|(icosα - sinα) where |Z|=sqrt(x^2+y^2) α=arctg(x/-y) (i*Z)^2 + 0.24-0.85i =(|Z|^2)*(icos(2*α) - sin(2*α)) 0.24-0.85i