Congratulations class of 2013 for getting this far.
I did Spesh last year and slogged through most of the practice exams dated as far as 2006. The only exams I avoided were most of TSFX and iTute exams.
Anyway, while doing them, I made a list of errors in those exams (and respective suggested solutions). I've done most of the exams and the errors listed below should be indicative of nearly the pool of practice exams you guys have.
I hope they're helpful and save you a few minutes from potentially getting confused or frustrated etc. At this time of the year especially, every minute counts.
Some shorthands:
MC = multiple choice; SA = short answer
2006
CSE Exam 1 6a)(ii) - should be (ū-1)ã + tb = k(b-ã), not (ū-1)ã - tb = k(b-ã)
Insight Exam 2 MC 10 - should be D, not E
VCAA Sample Exam 1 (Solutions by MAV) 4b) dy/dx = 2/3, instead of 2/5; 9d) c ≥ 5/2 instead of c > 5/2
VCAA Sample Exam 2 (Solutions by MAV) SA 4b) D should be 4.78, not 3.71
2007
Insight Exam 2 MC 6 - should be C, not E
Kilbaha Exam 2 SA 4e) - there should be a square root on 2(5-√5)
NEAP Exam 2 SA 5e)(ii) Region should be a shaded area, not a line
2008
Kilbaha Exam 2 MC 5 - Option C should be a vertical asymptote, not horizontal asymptote.
2009
MAV Exam 2 MC 21 - should be D, not C; SA 5c) P=200gN, not 120gN
2010
TSFX Exam 1 4) v should be √2ln{[(x^2+1)/2]+4}
2011
Insight Exam 2 SA 2d)(iii) x=160(1-e^(-t/40))
NEAP Exam 2 MC 17 - A should be 2(3π+1)i - j, not 3(2π+1)i - j
2012
NEAP Exam 2 SA 2d) - there should be a bracket around integral volume; 3) Volume should be in L (litres), not cm^3; 3b)(ii) Time taken should be to nearest hour, 1017 hours, not 1017.27 hours
Cheers
PIANOKEYS