General Thoughts - Mathematics Extension 2 (2 Viewers)

[Trebla]

Re: General Thoughts - Maths Extension 2

People were confident of getting full marks last year because it was so easy, but no-one actually did. From what I heard the top raw mark was 118/120 last year. Will it happen this year?

 

[SoulSearcher]

Re: General Thoughts - Maths Extension 2

People were confident of getting full marks last year because it was so easy, but no-one actually did. From what I heard the top raw mark was 118/120 last year. Will it happen this year?

I would think that is possible this year, the only real issue was time and not the difficulty of the paper.

 

[appleide]

Re: General Thoughts - Maths Extension 2

>3< What % do you think it would take to get into band 6?

I think I got 70ish percent raw. and you guys all go "Omg I got 95%".........................
So.... do you consider yourselves top 96% in the state? if not then I am screwed....................

 

[Starcraftmazter]

Re: General Thoughts - Maths Extension 2

There's no band 6 for extension 2, highest is 4.

 

[noobking]

Re: How did everyone go?

i left out around 30 marks.....is it very bad?

 

[gaoOO]

Re: General Thoughts - Maths Extension 2

People were confident of getting full marks last year because it was so easy, but no-one actually did. From what I heard the top raw mark was 118/120 last year. Will it happen this year?

i think there's a good possibility of someone getting full marks. i mean, personally, i think i got all the proofs without fudging and it's just going to be how well i went on the numerical cases. I feel better now that it seems others got the same answer as me for the last question.

 

[Yip]

Re: General Thoughts - Maths Extension 2

People were confident of getting full marks last year because it was so easy, but no-one actually did. From what I heard the top raw mark was 118/120 last year. Will it happen this year?

Didn't Stephanie Wang get a 120 last year? I also know another guy, Ning, who got an exam mark of 100 for 4u, which implies a 120 as well? (I was under the impression that u only get 100 exam only if u actually get full marks for the paper)

 

[kony]

Re: General Thoughts - Maths Extension 2

People were confident of getting full marks last year because it was so easy, but no-one actually did. From what I heard the top raw mark was 118/120 last year. Will it happen this year?

definitely. expect to see lots of ties for full marks

 

[vladimirv]

Re: General Thoughts - Maths Extension 2

Yea last year the top mark was 118.
But this test seemed even easier, and a lot of the questions at the end of the paper were show questions, which means a lot less careless mistakes.
Still, a lot of people won't go as well as they thought so i rekon a few 120s

 

[vladimirv]

Re: General Thoughts - Maths Extension 2

Nah you dont have to get 120 to get 100. I talked to stephanie wang, she said she got 118. I dont know her source but just thought id say that

 

[gaoOO]

Re: General Thoughts - Maths Extension 2

Didn't Stephanie Wang get a 120 last year? I also know another guy, Ning, who got an exam mark of 100 for 4u, which implies a 120 as well? (I was under the impression that u only get 100 exam only if u actually get full marks for the paper)

that doesn't make sense because i thought state rankings were based mainly on external marks

 

[divyachaddha]

Re: General Thoughts - Maths Extension 2

omg....am i lyk the only one who found that paper hard!!!??!!

 

[Trebla]

Re: General Thoughts - Maths Extension 2

Didn't Stephanie Wang get a 120 last year? I also know another guy, Ning, who got an exam mark of 100 for 4u, which implies a 120 as well? (I was under the impression that u only get 100 exam only if u actually get full marks for the paper)

Apparently that wasn't the case. Steph's friends said that she got 118/120, not sure where that came from though...they were also apparently shocked that nobody got full marks last year, considering a lot of the guys I know who got state rankings for it found that exam a joke...

 

[fishy89sg]

Re: General Thoughts - Maths Extension 2

I would think that is possible this year, the only real issue was time and not the difficulty of the paper.

omg i fell better now. there was about 8 marks i couldve done but didnt cause i ran outta time.

 

[gaoOO]

Re: General Thoughts - Maths Extension 2

Last question was just pie not pie^2 on 2.


Check it with the calculator if you like just sub in a large number

a large number doesn't equal infinity.

But actually, i do want to know what was wrong with the way i did the question, because while i wasn't sure about the answer, i can't see an immediate flaw in my reasoning.



lim n--> infinity of 2 (sin pi/2n)^2

as n approaches infinity, pi/2n approaches zero. But lim x--> 0 of sin x = x

therefore it is equal to 2 (pi/2n)^2
= pi^2/2


btw, how do people find out their raw mark? i think the 118/120 is probably her guess as opposed to a released mark, right?

 

[kony]

Re: General Thoughts - Maths Extension 2

the answer of pi²/2 is correct.

and it's probably steph's guess, though that's likely to be accurate.

hey trebla, you haven't seen the paper right?

 

[vladimirv]

Re: General Thoughts - Maths Extension 2

a large number doesn't equal infinity.

But actually, i do want to know what was wrong with the way i did the question, because while i wasn't sure about the answer, i can't see an immediate flaw in my reasoning.



lim n--> infinity of 2 (sin pi/2n)^2

as n approaches infinity, pi/2n approaches zero. But lim x--> 0 of sin x = x

therefore it is equal to 2 (pi/2n)^2
= pi^2/2


btw, how do people find out their raw mark? i think the 118/120 is probably her guess as opposed to a released mark, right?

pi^2/2 is correct, both theoretically and if u put in like 10000 in ur calculator. Whoever said it was pi/2 forgot to square the expression in the brackets

 

[vladimirv]

Re: General Thoughts - Maths Extension 2

the answer of pi²/2 is correct.

and it's probably steph's guess, though that's likely to be accurate.

hey trebla, you haven't seen the paper right?

steph said that someone told her, maybe a teacher from ruse with connections or maybe she has connections herself dunno
someone else asked how she knew her mark
she said that the guy who told her knew the top mark

 

[wangurflapper88]

Re: General Thoughts - Maths Extension 2

i pwned it

probably 118-120


fuck yes...

 

[jah_lu]

Re: General Thoughts - Maths Extension 2

does the board release any raw marks?
or is it just from markers leaking it to their students?