Change the function f(z). Example: 1/z
Remark: Now you can use the complex constant i. Example: z*i or i*z.
Other functions to try:
- (z-i)/(z^2+i*z+i)
- exp(1/z)
- log(z)
- z^3-i*z
- (1-cos(z))/z^2
- ln(z)