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It's kind of the same as "David has invented a game for one person. He throws two ordinary dice repeatedly until the sum of the two numbers shown is either 7 or 9. If the sum is 9, David wins. If the sum is 7, David loses. If the sum is any other number, he continues to throw until it is 7 or...

\frac{1}{50}\left ( \frac{1-\frac{49}{50}^{228}}{1-\frac{49}{50}} \right ) Its trial and error but still works.

Yeh that makes sense. I also got another way. Your is defs easier but....

yep that worked but how come \left ( \frac{1}{50} \right )^{n}=\frac{99}{100} doesn't work. Obviously the answer it gets smaller and smaller as it reaches n but shouldn't it be the opposite of your way? on a side note, for your bracket in latex to cover the whole fraction, ""\left ( *insert...

How?

Part (ii)

\begin{align*}&f''(x)=12x+18\\&f'(x)=6x^{2}+18x+c\\&f'(2)=6(2)^{2}+18(2)+c=0\\&c=-60\\&\therefore f'(x)=6x^{2}+18x-60\\\\&f(x)=2x^{3}+9x^{2}-60x+c\\&f(2)=2(2)^{3}+9(2)^{2}-60(2)+c=-8\\&c=60\\\\&\therefore f(x)=2x^{3}+9x^{2}-60x+60\end{align*} EDIT: Once again, im too slow.

give me a sec to write solution

Then it is social environment vs education. Choose between them. If your not motivated to self study then your current school isnt much help in terms of education. But is the social environment at your old school bad?

Getting in course fastest way possible (without bridging etc.) Don't want to waste parents money and effort put into my studies School Incentives

Nope. OP: If you can teach yourself, stay where you are. If you need someone to push you, go back to the other one. Either one will be fine though, compared to mine at least.

Pm me your email for papers

this one: http://www.phoenixeduc.com/shop/item/hsc-maths-extension-1-practice-questions is it recent? If not, does anyone know of any book that covers recent hsc questions topic by topic?

If you change back are you allowed to start VA halfway through year 11/ start of yr 12?

No it doesn't. Realise is clearly very good at maths, judging by this post and many others i have seen, but not everyone can and is supposed to be able to do them in their head. I mean it was a good estimate by him, but could he have done it to four significant figures in his head? Can you...

congrats

Not saying your lying, but you can't expect me to believe you completely. Judging by your other posts it seemed more true than a lie. Hence the 'assuming'

http://exampapers.web.fc2.com/tests/hs/y11/economics/2006.pdf http://exampapers.web.fc2.com/tests/hs/y11/economics/2003.pdf

isnt it 1/16777216??

Sorry forgot to add, 4 sig figs..... but yeh not everyone can do that (assuming you legit did it in your head)