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for the first question... (this is a theorem, where if pq = -1, then the chord PQ is a focal chord) the gradient of the chord PQ is: 1/2 (p + q) .... (using gradient formula) equation of the chord PQ is: y - .5(p + q)x + apq = 0 .... (using the equation y - y1 = m(x - x1) and subbing in...

is that the compound angle formulae you are referring to?? e.g. sin ( a + b ) = sina.cosb + sinb.cosa etc etc if it is, then you just have to learn them....(hope im talking bout the right thing...)

unfortunately there are only multi choice answers on the board of studies website....if you want answers you have to buy them :( i am pretty sure that leading edge will put out their answers to business soon... in saying that, its probably better if you do sections 2,3,4 yourself and get...

its not really a trig question....more of a parametric question

also with case studies, it is very handy to have one that covers every topic (such as qantas)... the hsc questions from a couple of years ago were: Question 27 (20 marks) Over the past two decades, the push for globalisation has had a significant impact on how businesses are managed...

this structure could help if the question is something like 'analyse/evaluate/explain/discuss the reasons for differing levels of development within the global economy' (i ripped this off a handout i got at school, but nevertheless it is still really helpful :) ) intro: classified...

a couple more *analyse the relationship between structural change and international competitiveness in the australian economy *analyse the impact of movements in the exchange rate on the australian economy *evaluate australia's policies regarding free trade and protection (you wouldnt...

off the top of my head.... *discuss the effects of protectionist policies on the global economy *analyse the impact of globalisation on the level of development within the global economy *(case study essay) *analyse the impact of the bop on the australian economy *analyse the...

for this question you need to use the equation Y = C + I its pretty straight forward from there... Y = C + 40 Y = (100 + 0.8Y) + 40 then its just maths... Y = 140 + 0.8Y Y - 0.8Y = 140 Y(1 - 0.8) = 140 Y(0.2) = 140 :. Y = 140/0.2 = 700 Therefore, the answer is D, 700

i had notes on rip curl...i just tried finding them, but they seem to have been lost sorry :(

how did you do it?? im thinking about the 2nd question now...

P(x) = ax^4 + bx^3 + cx + d P'(x) = 4ax^3 + 3bx^2 + c P"(x) = 6x(2ax + b) :. x = -b/2a P(-b/2a) = a(-b/2a)^4 + b(-b/2a) + c(-b/2a) + d simplify.... and it = - b^4 - 8a^2bc + 16a^3d P'(-b/2a) = 4a(-b/2a)^3 + 3b(-b/2a)^2 + c simplify.....and it = b^3 + 4a^2c = 0 ...

i got it!...just wait a sec and ill type it up

i keep gettin 8ad = 3bc :( so close, but still no cigar i think ive made a mistake in my working somewhere....

doesnt the triple root occur at x = -b/4a??

we hav dun it in class, but were told that it would only be asked in a 4u exam....

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i think we all get the picture now..... *whacks with mod stick*

it is probably best not to.... if you look at the exemplars from 2002, they dont talk about whacked out things....they just answer the question, talk about all the relevant points from the syllabus and have plenty of supporting material i.e. figures, facts, stats etc. if you just answer...

doesnt it stand for marginal private cost in this context??