|z - 3*I|
|z - 3*i|
z ----------- ________ / 2 \/ 9 + z
2 z 1 - ------ 2 9 + z ----------- ________ / 2 \/ 9 + z
/ 2 \ | z | 3*z*|-1 + ------| | 2| \ 9 + z / ----------------- 3/2 / 2\ \9 + z /