If you are talking about the PDF function stuff, it’s probably advised that you should just in case bc I’ve seen a lot of E(X) and stuff around that. But it’s not too hard bc it’s just x^2 multiplied by ur given function minus the E(X)^2 :)
know syllabus inside out, spam practice questions in timed conditions s and summarise into one whole page so u can look over
for options, i just make essay plans!