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85 is totally achievable men . . . I do chemistry and physics too and i am so crap at them . . . about 80 for chem and 75 for physics . . . and look at your mark! Its awesome. You should be aiming a 90+ . . . people like me is also aiming a 90+ dont let your hope fade! Keep aiming high :D *side...

I am aiming for a 90+ or even 95+ is i am lucky enough, but i never thought i am capable of getting such UAI . . just by looking at that number meaning i have to beat 95% of the people who are in the HSC, its just like . . . no i cant do it. . .

As the title said, I am pretty worried for the extended respond. I keep timing myself, and every single time , i would need a whole 50 mins+ to write my essay. . . Is that mean my essay is too dam long? Its about 1300 - 1600 word, depending on the questions, and how much i worte to address the...

I am amazed how soo many people are able to get average of 90+ for 4 unit maths . . . i am soo doomed, i think my average is some where 75 - 85 lol . . .

thx for your help any way . . . now i feel like not studying for 4 unit . . it stuffs u up = = better go back to 3 unit, then chem then physics and 4 unit last = = thx any way ="=

and now i solved it again , and i find a silly mistake i did, i got 3 pie cube . . . ="= lalala i gave up

oh this is not out of any papers , my tutor gave it to me . but the thing is , i forgot to ask him for the solution . . . lol, also i think theres is a easier way in doing this , maybe i am just complicating stuff up . . . is any pros out there can help ="=

and as you continues and solve it, u will find out the limit will change , because now is in terms of y , soo that using that y=sin x . u will find the new limit as 0 to 0 . . and thus we need to change it , since y = sin x is symmertrical to pie/2 and so i times it by 2 . . and make it from 0...

continus from above . . . now that for X2 - X1 part, we know y= sin x, thus inverse sin = x, and from how sin behave . . . that all station to central thing . . if u know what i mean . . . we know that X1 = inverse sin y . where X2 = pie - inverse sin y . . . since sin 30 = sin 150 . . same to...

then from pie ( 4 pie - X1 - X2 ) ( X2 - X1 ) . . . can be simplified to pie ( 4 - ( X1 + X2)) (X2 - X1) . . . . and we know X1 + X2 = pie . . . dont ask why , its how sin behave. . . thus the equations now looks like pie ( 3 pie ) (X2 - X1)

well it is not impossible . . i will try to type it out for you the way i did it. i used that pie times ( r2 square - r1 square ) . . . you get what i mean yeah . . . then i let the long radius be X1 and the shorter be X2 . . . and from using the difference between two square . . pie times...

For your solution . . delta V bit. . . how come u suddenly have a sin x ? The way i did it was way too complicated to type it out ="= and i bet the way i did was wrong . . there must be some easier way , dam it >_< ZOMG i am noob

you call yourself hopeless= = then what am i ZOMG ="=. . . i am trying to make sense out of your solution ="=

mmm, well they told us, we need to use slice to do the whole questions . . soo . . gotta use slice >_>

OMG , i think i forgot to tell you one important things. . . u gotta do it with slice method . . . yours looks like cylindrical shell method yeah @@?

i am trying to follow your solution , hold up i guess >_>

its just from 0 to pie . . therefore only have to worry about the area above the a-axis . . and please do it >_> . . . i have been on this question for half an hours= =. . . and i finally got a answer of pie cube , dont know if its right . . . dang it, dont have the solution ="= i swear to god...

Heres is a volume questions . . starts off really easy , then the second part pisses me off. . . 1. i) Find the volume generated when the area bounded by y=sin x and the x - axis, for 0 to pie, is rotated about the x-axis. This is easy , i got pie square on 2. ii) This area...

I havent been doing my chemistry syllubus notes. . and now i am trying get some done . . i came across this dota point. "identify the need for collaboration between chemmists as they collect and analyse data" I have no idea what to write about . . . to have a better understanding of each...

Zomg , i got that answer in the first place, and i was thinking , can u have sin^-1 in your answer . . then i thought no . . . . ZOMg . . thx soo much btw >_>