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would've preferred negative rep.

if a,b,c are roots of x^3 - 4x^2 +1=0 find: i) a+b+c ii)1/a+1/b+1/c

12.5^2 =156.25?

ends up as +0?

Should we STUDY something RELEVANT to the PHYSICS HSC COURSE? Dude, that would be hilarious if we got a question on this XD

+lim X->infinity X^X :P that's not much right? My bad, 0.10 on 0.01 :P

would that prove God? as the controller preventing us from scewing up our histories?

ummm. it cant? x=ln y rite guys?

XD stupid techers, question did not assume anything. I graphed this on wolframalpha.com and it's a function. so any set of coordinates on the function would satisfy the question.

question 1)a) x+2y+2\sqrt{x-y}=11+\sqrt{20} find x and y 3 marks EDIT: BTW Tech ext1 trial '02

Crap i did the 5c3, 5c4 and 5c5, but then my iexplore.exe failed and i i got a syntax error on my calc. :P

I prefer to think of it as an infinite(or Lim x-> infinity) number of parallel universes rather than t imeline which branches off

multiplying (2) by 2 4x+2y=2 adding together 5x=10 x=2 2*2+y=1 y=-3 check 2-(-6)=8 YAY!

we imagine, u calculate. We're your future employers, but DW, at least you'll have jobs.

Bullseye

sorry, u heard wrong! UTS has the lowest entry ATAR (of those three). USyd is the most internationally renowned overall of those three. Law and commerce faculties prbly brought it up. BUT it is unique at USyd because you can do Space Engineering with your Mechatronics degree. Only USyd and Uni...

That's exactly what I want to do! If you went to the USyd open day, there was info on both. Career prospect were limited in Australia, but not as bad as 'Aeronautical and Space'. Mechatronics is like an engineering, programming and electronics degree, so any of those three fields will have jobs...

Do we have to know part (i)?

the only point they meet is O(0,0).

oh, XD my bad! then the other guy was right.