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Re: HSC 2013 4U Marathon Not all real values. Equality holds when a,b=0, a,b=1 both of which include a=b. There should be an equal sign too.

The sqrt(n^2+n) + 1 is all on top of the denominator. No need to flame. You could have said, "Alternatively here is a better method to approach the proof" which would be more helpful to Shadowdude.

Re: HSC 2013 4U Marathon The inequality isn't correct for all cases.

Do something enjoyable. Note the marking criteria would probably be heavily inclined to the documentation side.

This is the thing, we do not know yet. It hasn't really been tested before. I've only see it briefly appear in one past trial paper ever.

Indeed. Maybe we will get a question on cyber-bullying. :P

There are a few additions of the syllabus I reckon they will test this year. Domestic & International legal cases as highlighted above. For Option topic II Boolean Algebra and Unicode.

Re: HSC 2013 4U Marathon Edit: Found a user called 'Jet' who made a wonderful guide on how to implement LaTeX onto the forum. $Let$\;P(x)=x^4+a_{1}x^3+a_{2}x^2+a_{3}x+a_{4}\;$where for$\;a_{k}, k=1...4 \in \mathbb{R}. \;$Suppose$\; z_{1}=\cos \theta_{1}+i\sin \theta_{1} \;$and$\;z_{2}=\cos...

Re: HSC 2013 4U Marathon Hello guys and girls I'm new. May I ask how I enable LaTeX on this forum?