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Still awaiting Drifting95's predictions.

Re: 2015 HSC Economics Marathon Contradictory point there. An appreciation will cause an increase in purchasing power for consumers, to purchase foreign goods. This will incentivise purchasing overseas rather than domestically as it will be cheaper. This will actually hinder domestic economic...

Re: 2015 HSC Economics Marathon Correct me if im wrong but when they say 'supply side', I think they are referring to the aggregate supply of an economy, not the supply of labour. In my opinion, having a decentralized wage determination system will cause an increase in aggregate supply, there...

After the exam is over, will we be allowed to take the question booklet home or do we have to wait for carrot to upload it?

Re: HSC 2015 4U Marathon If thats the case then you have to replace the x^2 and y^2 with (x-h)^2 and (y-k)^2 and prove that (h, k), A and B are collinear which makes the working out a bit more messier

Re: HSC 2015 4U Marathon Whoops my bad, but it shouldn't really matter. As long as you can prove the gradients are independent of the y intercepts of the chords, it should be all fine.

Re: HSC 2015 4U Marathon Judging from your comment after the question, it is safe to assume the centre of the ellipse is at the origin. It doesn't matter, it only makes it easier for me to type out the solution. \mathcal{E} = \frac{x^2}{a^2} + \frac{y^2}{b^2} = 1 $ where a, b are real $...

Re: 2015 HSC Economics Marathon But doesn't it improve allocative efficiency, I don't see how that can increase supply. It just means that labour is being allocated most efficiently, which will cause aggregate supply to increase, but not sure about labour supply.

Re: 2015 HSC Economics Marathon Correct me if im wrong but, having a decentralised wage system will have no effect on shifting the labour supply or demand curves. It removes the price floor (assuming the minimum wage is set above the equilibrium wage), which essentially causes an expansion in...

Re: 2015 HSC Economics Marathon Supply doesn't increase, supply expands (wording is key when talking about movements in the demand and supply curve). Another effect you can talk about is the decrease in income inequality and lower wage earners now earn more, however there is greater...

I did that also

Possibly memorising the diagrams can come in handy for knowing the steps. For example, I draw my solvay process diagrams as if it is like a table, to show the simultaneous nature of the actual process itself (where CaCO3 is being burnt at the same time as the brine is being ammoniated).

Not really, they wont ask you to sketch the process. However it is essential to know the chronology and equipment of the steps of the process. For example: "In the Contact Process, Sulfur is pumped into a furnace and is oxidised to produce SO2 (Provide Equations). The SO2 is the then pumped into...

Re: Announcement from BOSTES - significant change to calculus courses Im assuming when they say formula sheets, they will include things like: Tangent of an ellipse: x_1*x/a^2 + y_1*y/b^2 =1 Which tends to be the buildup of some conics questions. So what's the purpose of re-deriving it when...

Re: 2015 HSC Economics Marathon Well there is a change in the headline inflation, meaning there is some change in price of a volatile good. Judging from the options given and using common knowledge, oil prices are very volatile, due to its increased scarcity. So that gets rid of answers A and...

Re: Announcement from BOSTES - significant change to calculus courses It wouldn't make much difference for 4U though. It will just get rid of those buildup questions for conics, which are like "Show the equation of the tangent/normal is this:"

Re: HSC 2015 4U Marathon You also added 2 extra chords which is kinda redundant, because its the exact same proof, only different pronumerals

Less LaTeX glitches please

Re: MX2 2015 Integration Marathon But why does the tanu have absolute signs. Because whenever I had to trig sub something into an integral to get rid of a square root sign, I never had to consider the absolute signs. This is actually the first I have seen something like this

Re: MX2 2015 Integration Marathon Precisely this yes.