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just wondering, what topic does this question fall under? it's not quite integration is it?

yea y not? maybe after another billion yrs of evolution

thanks, lol in my origional i got all the way correct to the last step then fucked up the subbing T.T

did u even read my 2nd reply?

the answer is 2pie over 3 square root of 3. but i got 4 over square root of 3 [pie over 3 - arc tan 2 over square root of 3]

oh thanks, understand now

just wondering, i understand y it equals to 0, but why 3?

xDD

normally in a question like this, it should say z is a complex root of unity therefore when we have (z-1)(z^2+z+1)=0 we are sure it's (z^2+z+1)=0 not (z-1)=0 maybe there are other ways to do this question

|xyi| = |xy| (because the absolute value of i is 1 ) =|y| *|x| it's bascilly the same as algebra equation, but they changed the brackets into absolute value signs.

formula? there isnt really a formula.... z^3 = 1 z^3 - 1 = 0 (z-1)(z^2+z+1)=0 therefore (z^2+z+1) = 0 is this 1 of the answers?

i got his essasy question, after 3 lame attempts i still only got a band 4 quality! came some1 please tell me how can i improve this to a band 6? the question is "Analyze the impact of globalization on the economic (growth and development) performance of a country other than Australia...

sleep at 1 wake at 6 btw u play starcraft?

post here if u do chinese background. or maybe add me on msn xDD ^^

me too, i love that manga!! i want to but the whole seris and collect it! but most important of em all, after the hsc i want to get laid! ( fkn still vargin here T.T )

u want to meet Mandarin Speakers? they everywhere LOL

i got a different answer from subsitituion, can some1 tell me where i got wrong? S te^(-t) dt let u = e^(-t) du/dt = -te^(-t) dt = du/(-te^(-t)) therefore S te^(-t) dt = - S (te^(-t))/te^(-t) du =- S 1 du = -e^(-t)+ c

u got me mixed up with some other kid ^^