Search results

Not even going to try. I'm terrible at these sorts of problems. I'm curious if Spiral's got it :p

Re: 2012 HSC MX2 Marathon I know everything I need to know, the problem is that it's a "formal interview" - the teacher pretends to be someone who needs legal advice and we're a lawyer answering their questions. I hate public speaking (it's in front of the entire class) so I'll be really...

Re: 2012 HSC MX2 Marathon Hmmm okay. I'll try it tomorrow after my goddamn legal assessment (which I possibly might fail). For the Fibonnacci/triangle question, is this right? From what I can see it is, but I've never actually done a proof by contradiction before so I might've fucked up...

Will you marry me?

I'm going to sell everything to the year below me at school for exorbitant prices (I hate most of them) - I've been typing up all my notes in LaTeX so they look professional and whatnot, so hopefully I'll make some sweet cash. That being said I'd also like to give back to this forum, so I'll...

Re: 2012 HSC MX2 Marathon Yep, I'd realised that. I guess I'll just wait till someone else posts the answer

Re: 2012 HSC MX2 Marathon Can you give me a hint? I'm meant to be studying for legal but I keep coming back to this question and I'm not getting anywhere :p EDIT: Also, for the fibonacci numbers question, I might be wrong, but isn't that true for all triangles, not only right angled ones?

Re: 2012 HSC MX2 Marathon Yep

OH GOD. Cannot stop laughing!

Here's two hints: use the substitution u=x/2 and find sin^2(u) in terms of cos(2u)

Re: 2012 HSC MX2 Marathon <a href="http://www.codecogs.com/eqnedit.php?latex=\\ x^2@plus;xy-2y^2=0\\ (x@plus;\frac{1}{2}y)^2-\frac{9}{4}y^2=0\\ (x@plus;2y)(x-y)=0~~~~\Rightarrow y=x$ or $y=-\frac{1}{2}x\\ ~\\ $Differentiating both functions we get$\\ \frac{dy}{dx}=1$ or...

Re: 2012 HSC MX2 Marathon Here's an interesting question I just did: Generate a formula for the nth term of the Fibonacci series (1,1,2,3...) Hence, find a formula for the nth term of the Lucas series (1,3,4,7...)given that L_n=F_n+2F_{n-1}

Re: 2012 HSC MX2 Marathon <a href="http://www.codecogs.com/eqnedit.php?latex=\\ $Prove true for n=1,2 assume true for $a_n$ and $a_{n-1}$ try to prove for $a_{n@plus;1}$ (Can't be bothered doing a proper proof at the moment)$\\ ~\\ \begin{align*} a_{n@plus;1}&=a_n@plus;6a_{n-1}\\...

Re: 2012 HSC MX2 Marathon It certainly is a lot faster and more elegant, but when you say it isn't taught in schools, does that mean we can't actually use it in the HSC?

When I was on my L's I almost went through a red light because I was busy doing a differentiation problem in my head. Let's just say my dearest mother was not pleased.

Re: 2012 HSC MX2 Marathon That's what I immediately thought of, but I figured there must be a nicer way.

Re: 2012 HSC MX2 Marathon Never seen anything like this before. Can someone post a worked solution? I'm curious.

Re: 2012 HSC MX2 Marathon Oh god. That's so embarrasing. The legal notes I was writing last night are complete shit as well. Guess I really need to sleep more :(

I'm not expecting anything more than a hug and some congratulatory words although I wouldn't be surprised if my parents offered to pay for some of schoolies or something. IMO finishing the HSC and getting a placement in uni is a reward in itself.

Re: 2012 HSC MX2 Marathon EDIT: For nightweavers question I got 2\alpha ^{2002} , but I honestly wouldn't be surprised if that's wrong considering how I've been going this evening. Actual Edit: FUCK. Meant to edit my post, not reply to it. I really need to go to bed.