Cssa 2004 (1 Viewer)

[tempco]

kekeke... i did that question!! how about the second part of it?! the 6 mark question?! proving the lines are perpendicular?

Hell no. Well, I proved a whole bunch of triangles to be similar, so hopefully it'll grab me some marks.

 

[Jase]

there were two induction questions... and i cant remember either of em.

i think there was one with prove that n! _< (n+1)^k or something
how do ya do that?

and then last one, i wrote "therefore result is true for n=1" and then, Pens Down!

did anyone show geometrically that first part of the volumes one?

 

[tempco]

ARRGGHHHH

the paper is here to haunt me!!!
total abuse!

God.. I know how you feel... x_X

 

[Enigmatic Eve]

ARRGGHHHH

the paper is here to haunt me!!!
total abuse!

ditto for me!!!
gonna get slaughtered by parents and tutor!!!
eep!

 

[Crikket]

:O look grey council! they posted the CSSA trial papers up!
thou art saved!

 

[Crikket]

at least you have a tutor to slaughter you, my maths tutor abandoned me 3 days before my trials... 3 days!!! *sniff*

 

[Enigmatic Eve]

at least you have a tutor to slaughter you, my maths tutor abandoned me 3 days before my trials... 3 days!!! *sniff*

ehh... but he's crazy.... (lol)
he'll totally skitz it at me for all the silly mistakes i made and all the simple questions i left out!!
eep!

 

[Heinz]

did they also have an 8 marker question?
i can't remember what it was...

the resisted motion one?

 

[Crikket]

ooh did anyone get the newton's law thing?
is that in 3 unit? i can't remember doing it...

 

[Enigmatic Eve]

ooh did anyone get the newton's law thing?
is that in 3 unit? i can't remember doing it...

is that in the last question about the approximation method?
or are u referring to something else?

 

[Heinz]

ooh did anyone get the newton's law thing?
is that in 3 unit? i can't remember doing it...

The newton's root thingie? I got the first part out. It was something like

f(x) = x² - c
f(a) = a² - c
f'(x) = 2x
f'(a) = 2a

the approximation is a - (a² - c)/2a and so the error
E₁ = a - (a² - c)/2a - sqrt(c) = [a² - c + 2asqrt(c)]/2a
but a² - c + 2asqrt(c) = E₀²
so E₁ = E₀²/2a

 

[Enigmatic Eve]

The newton's root thingie? I got the first part out. It was something like

f(x) = x² - c
f(a) = a² - c
f'(x) = 2x
f'(a) = 2a

the approximation is a - (a² - c)/2a and so the error
E₁ = a - (a² - c)/2a - sqrt(c) = [a² - c + 2asqrt(c)]/2a
but a² - c + 2asqrt(c) = E₀²
so E₁ = E₀²/2a

Yeh.. I managed to figure that question out... did u get the values of a to be +-sqrt of c?

 

[ToO LaZy ^*]

twas a hard test. answered about 75% of the paper, fudged about 60%, adding up the silly mistakes, it'll probably come down to around 55%..hopefully.

i know i fully screwed up 15 marks though

 

[za]

did anyone find it easy?

so far the highest mark iv seen is 65%.

either were all dumb(pretty likely), or that was a bloody difficult paper!

 

[CrashOveride]

i tried some random questions then, circle geo was simple and earlier stuff aswell...ill do more later =p

 

[withoutaface]

When I said I answered 75% earlier, that was the paper minus the induction and the mechanics question, and with questions substituted by my teacher. Noone that I know of apart from me got the volumes question that he replaced the induction with though.

 

[tempco]

Yeh.. I managed to figure that question out... did u get the values of a to be +-sqrt of c?

I got +/- root c

OMG no way i got one right.

 

[ToO LaZy ^*]

twas a hard test. answered about 75% of the paper, fudged about 60%, adding up the silly mistakes, it'll probably come down to around 55%..hopefully.

i know i fully screwed up 15 marks though

plus we didn't have mechanics, harder 3u, or those motion questions. so our test was made up of cssa, heinment (i think) and other questions my teacher put

 

[withoutaface]

I got for that one root c or root(c)/3

 

[Enigmatic Eve]

Does anyone know the state average for the 4U trials are and were?!
An approximation, an estimate of previous years results?!