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yay! conics2008 got the same answer as me :D. I must be right.

product of all 4 roots = e/a = -5 product of the first 2 roots is -5, therefroe the product of the other two roots is 1. I think.

thankyou :D

someone can always describe it. 2 circles intersect at A and B, the both have a radius of 2 cm...

Well, some people don't really need a fantastic UAI to do just about anything you want at uni. I suppose simply getting over 99 will let you do just about anything you want, except space aeronautical engineering or medicine.

well, i'm sure if you got a UAI of 100, your employers wouldn't exactly brush it off as nothing.

i always finish about 20 minutes before the exam finishes so i always have time to check :D

I have another question I can't do. Show that: 2tan^-1 (x) = tan^-1 [(2x)/(1 - x^2)] ;Provided that -1 < x < 1

2U math is the easiest subject. I can do it with my eyes closed! (As long as someone reads out the question for me.)

Understanding series is a short, revision/cramming, textbook. :D The questions arn't very hard either, proberbly harder than MIF though. Everything is harder than MIF.

understanding yr 12 maths Extention 1

Actually, I just managed to solve it using 3U method. let tan^-1 (1/2) = x therefore tan x = 1/2 let tan^-1 (1/3) = y therefore tan y = 1/3 tan (x + y) = (tan x + tan y) / (1 - tan x . tan y) tan (x + y) = (1/2 + 1/3) / ( 1 - 1/2 - 1/3) tan (x + y) = (5/6) / (5/6) tan (x + y) = 1 x +...

can you show me please?

But this is in the inverse section of my understanding yr 12 math textbook... Is there some 3U method to prove this?

I can't do this (I know I may sound stupid now, but everybody has their dumb moments). Can sombody show me the proof for this please? :D Prove: tan^-1 (1/2) + tan^-1 (1/3) = pi/4

Good work. I hope I get 97+ in physics. :D

I wouldn't mind coming top 5 in the state for 4U and 3U math.

I won't let you beat me! :D

thank god for google. :D

Actually, 2U math only has at most half a page of working out, and theres only a few of those in any test. Most of the questions take 1 or 2 lines to solve. :D