Sup. After seeing the 2 unit exam, and hearing descriptions of the 4 unit exam (I unfortunately haven't seen it) I'm under the assumption that 2u/4u were pretty fair, dare I say 'easy'.
So, I'm just gonna say, prepare for hell tomorrow. The same exam committee writes all 3 papers, and they balance 3 unit out to a) be the opposite difficulty of 2u/4u and b) test the content that 2u/4u does NOT have.
Here's what I'm thinking:
A straightforward induction
Average to difficult binomial
Hard circle geo
Q6 projectile
I'm tending towards Max/min for Q7, mixed with a bit of 3D trig.
There will be no sort of functional analysis/inverse functions type thing in question 7 (cf. 3 unit 2007 Q. 7a), or 2006 Q7b))
Also, if someone has the 4 unit paper, and some time, can they scan it so I can see it?