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yee thankss but i mean, how do u find the First root in a quick way? not trying one by one.? becoz sometimes the root maybe a fraction..

from (1-cos2x)/(1+cos2x) = tan^2x show that the exact value of tan22.5 is square root 2 -1 8x^4 + 12x^3 - 30x^2 + 17x - 3 =0 Find all the roots. wht is the quickest way to find roots? I always try one by one, negative/positive.. it take quite a long time and sometimes still couldnt get the...

oh i got it now thanks everyone!

z1/z2 = r1 (cosN+isinN) (cosM-isinM) r2 (cosM+isinM) (cosM-isinM) = r1 cos (N-M) - isin(N-M) r2 = r1 cis (N-M) r2 then?

thanks guys :) for the first one, ye i did the way u said, but and then i get z1/z2 = r1/r2 cis (日1-日2) then i can only say arg(r1/r2) = 日1-日2

arg (z-1 / z+1) = pie/2 find the locus of the point which represents z and also this question thanks

prove : argz1 - argz2 = arg (z1/z2) anyone please help~~? thankss

There are many exercises after each chapters without answers.. anyone got the working solutions from their teacher?

Thanks everyone!!! The information is very useful~~

some of my frds said if we got band 4 in 3u/4u math, we will get 1mark extra in our UAI, and then band 5 --> +2, and then band 6--> +3, is this true??? is there any exception? can i get only 95 UAI, then get 4marks extra to get into LAW which requires 99.4? THANKS A LOT~~

1) A group of lemmings run over the edge of a 200m cliff at 0.6 m/s a) Calculate their time to fall to the bottom of the cliff. (4.52s) b) Calculate their velocity half way down. (42.3 m/s) c) Calculate the time their speed will be 30.0 m/s (3.06s) d) Calculate the speed at which they hit...

It really comes down to which major you decide to study for your commerce degree.. There is no doubt that Finance major is one of the most regarded in UNSW. For Actuarial Studies, it doesn't really matter whether you go to MACQ, UNSW or MELB but I heard that 3-year actuarial degree @...

Yes it is a heavy and tough major You don't really need to be smart, but hard-working person to succeed in actuarial education. Aiming 65 points for every actuarial subjects is the minimum requirement for you to stay in this career I would say.

i got it now!!! thankyou all guys :D :D

Thanks Heaps T______t

yee im pm-ed u already

Practical exams may seems easy for most of the people.. but definitely not me.... :uhoh: I always feel nervous and out of control dur ing the prac.. and always made silly mistakes in the prac.. wht can we actually prepare for it? except revise for past prac that we did.. wht do we need to...

** i want to find someone who can speak mandarin / cantonese

Thanks A Lot!!!!!!!!!

please leave ur contact details thanks