/sci/ - Science & Math

tldr: Anyone from the Ex-Yu in here? I need proper translation of the first problem so I can google that area and start studying.

If nobody here speaks Serbian, I'd be grateful if someone more knowledgable than me to tell me what I'm looking at here.
Basically, the are is complex analysis, that much I know. So I can try to translate the first problem literally, and if anyone recognizes what it is (just english mathematical terms of what is asked of a student is enough, I'll google the rest).
So, my attempt: "Using the function f(z), map the area D".
I have no idea what this is or what it means, and it's pretty ungoogleable the way I translated it.