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iight the first one is a circle so the domain is -2 is less than or equal to x which is less than or equal to 2. Same thing for range. this domain comes about due to the radius of the circle being 2. as for the other. domain is -1 less than or equal to x which is less than or equal to to 1...

id take a guess and factor out the a-b but thats just cos its too simple of a question if you just leave it wid ur answer

thats constantly at the back of mai mind now! ayy aplus do you know a big guy in your yr named john? wears glasses? ring a bell?

im pretty sure baulko own at running. In the 17s this yr they liked raped us xD apparently we got a national figure skater in yr 10 or something!

ive gotten so useto saying that for half my prelim exams its gonna be such a loss!

but every teacher regardless of how good they are slips up once in a while! Its funny though when you correct them xD it was a hobby of mine in yr 10 maths!

you know when you do these questions, do you do it on a piece of paper first then post or just do it here?

yeahh that guys solved the other half of my questions LOL..what school does lolokay go to? i know theres this chik in my school and like teachers actually refer to her solutions to check if theres are correct! they admitted it infront of us!

i went to the yr 12s in my bus, "4u cant be that hard". They all looked at me and laughed! From that moment on ive feared it...just a liddle :D

you end up solving pretty much every problem thrown at you and i just look in awe xD today though ive been fortunate enough to almost answer every question apart from that integration one cos i havent done much of it yet :D

LOLL teachers do sometimes remind you the day before so that might be truee!

Its not like theyre designed to do that. Our emotions pours into our work enabling us to work quickly or something. Like when you no you have no other option but to do it ur brain functions amazingly! At least thats the way its been for me

itd be a sin if you dont! thats the impression my teachers giving me but i had mind made up from day one yr 7 that i was gonna do it...when i wasnt going to selective i was like if i didnt, who will :p

Re: chem help please you did? i know what i did wrong. Make sure your using the right weights of elements. I mistaken sulfur for nitrogen in my second calculation but i didn exactly get that answer. got 3.126989897g which equals 3.1g cos of two significant figures

Re: chem help please first write your equation. Ba(NO3)2 (aq) + (NH4)2SO4 (aq) => BaSO4(s) + 2NH4NO3(aq) therefore BaSO4 is the precipitate (refer to solubility rules) now we know that we have 3.5g of Ba(NO3)2 so we work out the number of moles and you get 0.013393...mols (formula used is...

Re: Biology... id keep all your essay based topics like english, history, eco etc. It will help you write essays in yr 12 and act as a guide particularly with english bcos the whole concept technique + quote effect thing never changes much, Just the texts

I go to girraween high and like our extn test was like daym easy, possible to get 100% most top students getting in the high 90's...and for extn i havent gotten a mark below 80 this year. Post some of these really hard questions that your getting. Are yous having problems with some of the yr 12...

first derivative is the gradient of a curve. Equating it to 0 can give you turning points. The second derivative is useful in determining points of inflection. f(6) means when y = 6 and f'(6) means when derivative has a value of 6 zeroes are where the curve cuts or touches the x axis

for 3) sqroot (5-y)^2 + (2-x)^2 = sqroot (-3-y)^2 + (x-x)^2 then square both sides i got something like x^2 - 4x -16y +20 = 0 for 4) the value for the x coordinate is just x because its an unknown so when you you are using the distance forumla it becomes (x-x) so then you get 0 and...

hi guys i have my practical exam tomorrow and was wondering how to study for it? what kind of things do they assess you on like do they assume that you have knowledge of every prac you done this yr so they might ask identify the independant variable in the (insert pracs name here) prac? anywhere...