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If it says at least one you can use two. But apparently if it asks for only one and you use two, either your first or best (not sure which of these) related text discussion counts. This means that you won't be marked down as such, but your essay will be too short to fully answer the question.

Good, yourself?

Thanks very much! So clearly this isn't the case then:

Re: HSC 2014 4U Marathon - Advanced Level Is this the solution for 14ai? LHS=z^{n}-z^{-n}\\=(cos\theta +isin\theta )^{n}-\frac{1}{(cos\theta +isin\theta)^{n}}\\=(\frac{cos^{2}\theta +2icos\theta sin\theta -sin^{2}\theta -1}{cos\theta +isin\theta })^{n}\\=(\frac{2icos\theta sin\theta...

Hey could someone show me how to do this question? After looking at the answers I think I understand how to do it now but I'm not sure about something they did. Thanks :). Equal volumes of lead II nitrate solution and sodium iodide solution, each with a concentration of 0.10mol/L are mixed. A...

*Slaps face*

Glad I could help.

Show off :p (jking)

Yeah, I hate dem star burns

Don't you do Ext tho? :oink:

Although it would be handy to have a worded definition of Journey as an AOS, don't worry too much about it. It's not as if the HSC students have to be able to define 'belonging'. Focus more on the representation and effects of journeys, as well as the process itself.

Re: Is getting a band 6 in SAC scaling better than an E3 in ext. history or ext. 1 en I imagine that a band 6 in SAC would be better. This site could give you a rough idea of the marks and their scaling: http://www.hscatarcalculator.com.au/

The answer is A (I think). D is an ionic compound, which means that it doesn't have molecules. C is a molecular formula. B would be the answer I'd go for if it wasn't A.

I have a couple (hard copy), but am looking for a few more :).

Not that I have any experience at all with those subjects, but I think you should give English Extension 2 a go. If you were to do EE2, you could brainstorm ideas in the upcoming holidays and hopefully have a selected project or handful of ideas to choose from. To brainstorm, you could mind map...

I think Geography would complement your other subjects more.

Which preliminary school past papers would be the best/most difficult to practice on for Ext1?

Re: HSC 2013 3U Marathon Thread a) RHS=\binom{n-1}{k}+\binom{n-1}{k-1}\\=\frac{(n-1)!}{(n-k-1)!k!}+\frac{(n-1)!}{(n-k)!(k-1)!}\\=\frac{(n-k)(n-1)!+k(n-1)!}{(n-k)!k!}\\=\frac{(n-k+k)(n-1)!}{(n-k)!k!}\\=\frac{n!}{(n-k)!k!}=\binom{n}{k}=LHS

C5H6N is the empirical formula of C5H5NH (molecular formula). It is referring to the compound Pyridinium, not its isomer 1-Amino-2,4-cyclopentadienide. - Pyridinium: http://www.chemspider.com/Chemical-Structure.4169387.html - 1-Amino-2,4-cyclopentadienide...

tl;dr i actually did