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I think I got 68-70 as well

I put 0.7 I did the halvign the interval method twice, and found that the root lies between 0.7 and 0.75. Hence it needed to be rounded down. It really came in handy that I read up on the 1996 examination report yesterday night though: The question was suspiciously similar: 1996 HSC 2(a)...

wow, you do the exact same subjects as me! :D

Yeah the time constraint was the problem for me...Hopegfully 70/84 is still on teh cards though

Questino 10 was certainly not parametrics Parametrics is when you express a formula in terms of another variable, for example t e.g. x^2 = 4ay can be expressed as x = 2at and y = at^2 Thats parametrics Question 10 was locus/parabola stuff Certainly not 3 unit...

Yeah, I ran out of time, the paper was quite long I thought

The paper was harder than last year As a matter of fact IMO its the hardest paper since yr 2001.

Prediction: 113+-2 /120

Im hoping for 70/84, from what I've counted...I screwed up the rates of change question and hence lost valuable time. I only did bits of 7(b) and had no time to check over my answers unfortunately :(

It was most certainly a 2 unit paper. What I will say is that the only thing IMO that helped 3 unit students was the identity (A - B)2 = (A + B)2 - 4AB You use it a bit in polynomials (sometimes). Yet even here I have seen questions in 2 unit textbooks that are very similar, e.g. If 2x2 + 3x...

Good luck everyone :D Although we may not all do as well as Slide Rule or KFunk or any other 4 unit person, lets be proud of what we do get, and try our best :)

I think you can Just quote it My teacher marks Extension two, she said theres no need to derive it.

Sorry guys, both ur answers are incorrect :p You forgot the condition that x(1-x)=> 0 Then it becomes right ;) The final solution is 0<=x<1/10 or 1/2 < x =<1

http://community.boredofstudies.org/showthread.php?t=71906

lol Hilarious

Lety An be the amount in the bank after n days so A1 = 1000(1.01) A2 = 1000(1.01)2 + 999(1.01) A3 = 1000(1.01)3 + 999(1.01)2 + 998(1.01) . . . An = 1000(1.01)n + 999(1.01)n-1 + ... + 2(1.01)2 + 1(1.01) Now I dunno where to go

I believe this is it (or part of it anyway) http://math.stanford.edu/~lekheng/flt/wiles.pdf Its well beyond the range of ordinary uni maths, let alone 4 unit lol I read somewhere that only maybe 200 ppl in the world could understand it

What? fermats last theorem lol http://www.pbs.org/wgbh/nova/proof/

Im not sure that a 'lot' of ppl get 80+ /84 ... But the majority clearly are not scoring 90% + , from the non-4 unit students anyway.. Oh also when i said "one or two questions" i meant, like, sub parts to questions, not WHOLE questions ;) But you are right, there are bound to be ppl...

Yeah, I edited it just then lol, I divided by 5 for no apparent reason shows how much i know about permutations :p