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think about this.. h = sin^2A + sin^2B + sin^2C given A + B + C = 180..A,B,C > 0 and h is a maximum...find h then you have proven it (h is 4/9)

or a smart class :P

cm i got the exact thing..thats why i was reluctant to post it :P

if you dont like the fact that teachers have the right to strike go to north korea or something ..communism anyone?

haha what a cool school

"I still don't understand why people even choose the abysmally scaled subjects such as General Maths, Senior Science and Standard English (I do know that it is scaled the same as Adv. but in reality it definitely disadvantages the candidates - how can anyone deny this ). " stupidest statement...

here a hint. (i think) ill post my ans tommorow r = a/2sinA = b/2sinB = c/2sinC 1/(2r) = sinA/a 1/(4r^2) = sin^2A/a^2 = sin^2B/b^2 = sin^2C/c^3=2 3/(4r^2) = sin^2A/a^2 + sin^2B/b^2 + sin^2C/c^2

that was abit harsh :P ill reattempt it later ..after doing 15 parametrics qns then getting a point (o,a) that isnt the focus..hehe

yes..if my answer of n!(n+1)! is correct (i think it is) then there will be n+1+n people ie 2n+1...but with a circle you minus the one due to its symmetry hence it becomes (2n)! is the total amount of arangements and as a probability it becomes n!(n+1)! / (2n)! :)

my answer... consider the circle...the only way the situation can occur is if two women sit next to each other then all the rest are in alternating ie M F F M F M F M F ...etc for now consider all the males fixed in their position. the number of females have (n+1)! ways of moving around...

97%seems popular :P ...i got the same as 04er adn toolazy

not as good as i hoped..lost 2 marks projectile motion qn for "not doing it the physics way" when i derived it from first priciples and got the answer. lost another 3 marks on 3 consecutive questions for not have a conclusion even thou i had all the points...ahh i spose its helping me for the...

a qn7/8 binomial inequality for our hsc qn7/8 would be cool...got any laying around i can have a go at CM :P/..happy bday btw

these threads are pointless unless u scan the test :P 001100010011000000110000 :)

thanks!

"1. forget about 4u people. they have nothing to do with you. ." not true...you still compete with them for ranks

hmm i found this qn to be good..and will test if you really understand the theory expand (a+b+c)^3 in a sport 65% ppl support teamA 24% ppl support teamB 11% ppl support teamC use this --> (a+b+c)^3 to find the probability if 3 ppl are randomly selected i) one supports teamA, one...

600! / (300! x 300! x 2^600) can someone pls give me an approx to this (a few sig figures) or a site with a large calculator...thanks!

aim to get high enought so u can get into every course

look in 4u forum similar qn