The 2005 CSSA` (1 Viewer)

[raspb3rry]

rofl i had r=h-1 written on my page... fucksake

when h=0.5, i got something around pi/40 which is probably wrong

I put r=1-h on my diagram lol.

 

[Trev]

the cone one u need to use tan 45=radius\1
so radius=1
the smaller radius is =1-h
den u do volume of that thing =total volume minus volume up da top part
den get V=pi\3 [1-(1-h)³] and expanding it yields the required expression

Omg, fck I suck! I worked out that, but it never occurred to me to find out the volume using integration

 

[FinalFantasy]

pi/40? Now this is scaring me.

think i got 2\5pi for that

 

[FinalFantasy]

Omg, fck I suck! I worked out that, but it never occurred to me to find out the volume using integration

what integration???

 

[fantasy27]

think i got 2\5pi for that

yeap... i got that too.. phew!!!

 

[Trev]

what integration???

Erm... I don't know anymore haha

 

[FinalFantasy]

damn.. hopefully i still get some marks then.. beause i just didnt minus the volume of the top part so i couldnt get my answer... damn



how do u get the < and > signs? im a bit confused, i left my answer with ='s

uh oh!

x²-10>=0
(x-root10)(x+root10)>=0
when x=-5, expression true
when x=0, expression false
when x=5, expression true
so x<=-root10 or x>=root10

maybe i rememberd incorrectly den lol
(or maybe i wrote it down wrong which would be bad)

 

[evette13]

Omogosh guys i totally froze. I hate all those application stufff, i had no idea so i just wrote all this crap. My teacher is gona freak. 50% is my aim lol
I didnt get Binomial, 2nd projectile, cone or 1a...so screwed!

 

[king_of_boredom]

i'll be cheering if i get close to 80%!!! but i'm expecting between 50%-60% HAHAHA

 

[FinalFantasy]

Omogosh guys i totally froze. I hate all those application stufff, i had no idea so i just wrote all this crap. My teacher is gona freak. 50% is my aim lol
I didnt get Binomial, 2nd projectile, cone or 1a...so screwed!

hey dun worry as long as others get scores similar to urs den ur fine!

 

[physician]

the nswer to 1a i think is 2/5

we havn't even done that yet.... so my teacher is taking it out....

as for the M.I. qurestion..hahaha.. i couldn't prove it so i concluded with

therefore by MI blah blah blah ........ lol

ok so the answer is 2/5 lol...
but how do u get the answer???

lol the question was sin2x/5x right?

nyways... i took the 2 outside and took the 5 outside for some very very starnge reason... i remeber reading somwehere that sinx/x equals 1...

so i ended up with 2/5.... lol

oh well... it's not counted for me.. but i would like to know how to do it if u guys wouldn't mind filling me... 'us'... in

 

[FinalFantasy]

ok so the answer is 2/5 lol...
but how do u get the answer???

lol the question was sin2x/5x right?

nyways... i took the 2 outside and took the 5 outside for some very very starnge reason... i remeber reading somwehere that sinx/x equals 1...

so i ended up with 2/5.... lol

oh well... it's not counted for me.. but i would like to know how to do it if u guys wouldn't mind filling me... 'us'... in

lim x-->0 (sin2x)\5x=lim x--->0 (sin2x)\2x \ (5x\2x) =1\(5\2)=2\5

 

[physician]

hey dun worry as long as others get scores similar to urs den ur fine!

my class has 4 students.. i think three of us will get between 50 and 60

and the other will get 80+ most certainly... possibly 90

 

[jemsta]

make it sin2x/2x then times it by 2/5
which leaves u with 1 times 2/5
which equals 2/5

 

[ishq]

think i got 2\5pi for that

Phew!
I'm not alone then! I got something on pi as well.

Another thing - for the last projectile question - what did everyone get? For the T?

 

[FinalFantasy]

damn i didn't get time to do q7Bii)... that T thing
i took my time for 1 to 6... den had to speed up near da end
missed out on the last q and 7Bii)
i also forgot to do this 2 mark q. , i skipped den forgot to go back lol

 

[king_of_boredom]

speaking with everyone after the test, everyone was strapped for time. i believe the easiest part of the exam was the circle geometry question!

 

[FinalFantasy]

^ I usually have heaps of time left, but this time I just felt like trying to take it easy and spread out my time and c wat happens...

 

[Stefano]

Haha - serious ? I finished with 20 minutes to spare

I don't know what you guys are complaining about, it was a relatively easy paper.
I got everything except induction and a stupid integral.

So, if all went well, im hoping for 81/84 *crosses fingers*

It was SOOOO much easier than yesterdays 4u paper, lol

 

[danza108]

if it isnt too much, could someone post the paper? there isnt a sercuity block is there? thats only for independent schools right?