Hey mate, could you show me your working for the question that asks "Show a^2=16-4v^2"? This would be much appreciated! It's really bugging me that I can't get it lol... If you don't have time then don't worry :)
Re: HSC 2013 2U Marathon
This is my first time on one of these marathon things and I don't know how to use 'LaTex', but does a=e, and is the area (e/2)-1? I'm probs wrong but worth a try :P
Haha, yeah I wasted so much time in the triangle one! Looking back now, I should have skipped it and spent time going back and checking my answers. I can't do much now, I just hope I didn't make any really bad mistakes. :P lol