Okay, I understand part a) now but after a day of trying, cannot for the life of me understand how to do the rest.
Do I have to integrate to get a cumulative distribution function? And even then, I still don't understand how I can get it in just terms of Y for part b), and what I'm supposed to do for parts c) and d).
Sorry if I'm being stupid, but I really cannot understand what I'm doing at all.