i'd like to say a MASSIVE thanks to everyone involved in organising the event. despite being a little disappointed with my performance esp in 3U i know i had a fantastic time and i'm pretty sure everyone else did too, somewhere underneath all the butt-hurt!
as far as general comments go: 3U was a LOT harder than any of the previous years, i doubt i got over 55/70 and i got ~90% on the last 2 years. 4U was OK, i felt like i could have gotten 70 with maybe 30 more minutes, and i'm pretty sure i got 60-low60s (inb4 tonnes of silly mistakes). the volumes question was the best volumes question i have ever seen within the confines of the HSC course and it was probably the highlight for me since volumes is my favourite topic.
ALSO, i stand by what i was saying about that sum question being wrong, if you check the degree of the LHS and RHS it's pretty clear that the powers are wrong on the RHS. for my actual solution: