for train of thought, go like:
"HOLY FUUCKKKKKKKKKKKKKKKKKKKKKKKK WTF, HSC is in 3 MONTHS !! I better get off my ass and do something now!!!"
that should do it... lol
for the second example
%5Cfrac%7Bdr%7D%7Bdt%7D=%20%5Cfrac%7B1%7D%7B2%5Cpi%20r%5E2%7D
%5Cfrac%7Bdt%7D%7Bdr%7D=%202%5Cpi%20r%5E2
dt = 2 pi r^2 dr
integrate both sides
t = 2/3 pi r^3 + c
if you can do all the Fitzpatrick questions, you can do any question given to you in exams....
Fitzy is all you need for MX1 and of course past papers lol
i have a book for Ancient history and for everything else i use refill
for maths i use anything i can find, as it's paper, usually scrap from the library or the printing room