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yup my bad

was planning to start a thread like this but u beat me to it -_- i know a third derivatave method If f''(x0)=0 and f'''(x0) exists and �*0 then (x0, f(x0)) is an inflection point. ............... http://community.boredofstudies.org/14/mathematics-extension-2/107895/...

simple enough...most of the year 12, 2006 has left school already...nething that you wish to share, or any tips you want to give to the next year's year 12? eg study harder, or go out more etc etc...

same but with economics

i personally enjoy classical music, and like to listen to it occasionally. Does it help with concentration? im not sure, but it does help my mind to relax especally before an important exam, it also helps when im playing a game of chess just for fun *nerd*. I find listening to classical...

well whats wrong with this proof ? first..let a=b 1) ab=a^2 2) ab-b^2=a^2-b^2 3) b(a-b)=(a+b)(a-b) 4) b=a+b 5) b=2b 6) 1=2. which line has a error and why...?

lol alright just for u i wont drop :D

im doing thirteen units now with offline classes starting 7.45, but ur school might be different. Thats why im dropping eco for 4 unit maths. but damn im ranked 15/45 in a selective school, while in chem im ranked 48/96..only problem is that i enjoy chemistry+ it is prerequisites for most...

hmm probably there are threads like this out already, but neways...what are you guys dropping for the HSC year and why... im probably dropping economics because it takes quite a while to study for it, and i personally find the subject quite mundane.

y'=2/3 <--- use of y'

his 4 unit revise book they now sell at dymocks does not come with answers...but RIP Mr Coroneos

and no one anwered my question too -_-

lol ok then my turn!! prove cot(A+B) = (cot A cot B - 1 ) / ( cot A + cot B) *might have been typed up previously but too lazy to look through 500 posts -_- EDIT : the text book has the answers wrong, so i edited the question.

bah ice ken too my turn -__-"

lol ill give it a shot lim (x->0) (1-cos x)/x2 = 1/2

Dissollution occurs because each of the molecules are polar, which means they are slightly positive of negative at one end. Water is a substance which is resposible for reducing the electro attraction force between atoms by a great amount and hence they are able to break up when placed in...

Re: Maths comp [westpac] First ten questions was not that bad...but when i got towards the end i had no bloody idea how to do it, so i guessed like 10 questions :P

i bet ur azn...no phys is not that hard..just hell of alot of formulas to remember...extra 1 unit? try fill it up with ext english and if u dont like it drop in year 12 and pick up 4 unit maths. Or u could do another subject

Try considering this: Man A: 1st year: 10000 2nd year: 11000 3rd year: 12000 and so on therefore series is: 10000,11000,12000 etc. with difference 1000 Man b: (try splitting into 6 month payments) 1st year: {5000 + 5500} = 10500 2nd year: {6000+6500} = 12500 3rd year: {7000+7500}...

Deltan i do phys, chem and agriculture -_- which is similar to bio. It depends on the tpye of person u are. If u find science easy, then doing all 3 science wont be much trouble. Im coping fine wif 2-3 sciences, you just have to revise regularly to remember all the crap that u have to -_-. I...