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Edit: New question. It says by using 2 and 1 + i as roots, construct a polynomial with the lowest degree with rational coefficients. If it has complex coefficients, then the highest degree is 2 but why is the highest degree 3 when you are dealing with rationals? Solving z^4 - z^3 + 6z^2 - z +...

I am really bad at probability... So please help me with these two questions :D I have attempted to solve them/cannot do them outright. 15) In a raffle in which 200 tickets are sold, there are 3 prizes- first prize of $100, second prize of $50, third prize of $30. I) A girl has one ticket in...

At lower ranked schools ~200's, my ancient history teacher had mentioned that just before the HSC exams, she chooses one student who she thinks is first place in the cohort in the subject and sends that name over to the BoS. Is this true and is this for the scaling purposes of the HSC exam (e.g...

So I only just got my creative economics study guide, textbook and workbook and wow... it is amazing. Does anyone else find it is so much more helpful as they link everything (topics, concepts) to the HSC exam? I prefer it much more than Tim Riley's... Sorry the thread might seem pointless but...

http://www.uac.edu.au/documents/atar/2011_HSC_Table%20A7.pdf Found this, could someone explain it to me? Number = number of students? What is number on or above then? Same for percentage. Thanks :D

Just a question I need help with (I) Prove that the tangent to the parabola x^{2}=4y at the point P(2t, t^2) has question y-tx-t^2=0 and hence determine the equations of the two tangents to x^2 = 4y through the point (-2,-3). (II) Show that the line y=mx-2m^2 touches the parabola x^2 = 8y for...

Currently our school uses Coroneus 3U and Maths in Focus. I already have a Terry Lee for 4U. If not Cambridge, would Fitzpatrick be a better choice? Thanks in advance.

EDIT: Woops, the topic was differentiation of implicit functions but I just realised that this one isn't one of them... My bad, didn't mean for the misleading title. Sorry for posting these easy questions but I can't figure out this one: Given that y=\sin^{-1}\sqrt{x} prove that...

For subjects mainly including Maths, would it be worth it to print out the syllabus so that I am able to tick off the topics I feel confident/studied for/thorough understanding etc etc? Has anyone else done this? Also, for the subjects: Economics and Ancient History, is a print out of the...

If a question says 'derive the equation of the tangent to the curve x^{2}=4ay at the point (2ap, ap^2), does that mean to go through the whole process or can i just chuck the equation straight in?

The question below is solved. I have another question, at a dinner party 6 people sit around a table. b) Find the probability that if seating is at random, 2 friends will sit apart. Also, how many arrangements are possible from the word STUDIO if the letter s is not the first letter. I did 5...

So I was reading this Rumour... Maybe? and read this and reminded me of something I had thought about for a long time... I was just wondering, will my marks get 'dragged' or 'scaled down' if I am in a school of ranking 270-300 for 2010 according to HSC School Rankings and have the current...

Hey, just posted a thread but that was mathematics not maths ext 1 so I thought making a new thread would be appropriate. In the figure, two tangents are drawn from the point P(3, -2) to the curve y=x^{2}-7 . Find the equations of the two tangents. (Note that the point lies...

Not understanding this maths question entirely so any help would be appreciated. Lines y=mx + b and y=5x-9 intersect at an acute angle whose tangent is \frac{2}{5} . FInd the possible values of m . I don't really understand the bit where it states 'whose tangent is 2/5'. Thanks...

Hey, I'm only in year 11 however next year I believe I have to go 'cross-campus' to another school to take extension 2 maths as my school can only provide extension 1 maths (not enough people doing extension 2). Just wondering, this won't have any sort of 'different' affect on my ATAR right...

Just wondering, school camp Yr 11 coming up and apparently it accounts for 25 hours for the amount of hours we require to attend school. Am I screwed if I miss out on it? Also, I haven't missed a day of school.

Hi, I just needed a tiny bit of help with this Mathematics/Extension 1: 3D Geometry question. So pretty much, I used sine to find the 2 sides of the triangle located at the middle-ish area. Sin73 = 3000/x. Sin78 = 3000/y. Afterwards, I found the top length to be 950/3 metres. Then I...