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Edexcel A level S2 June 2009

Reply 300

vadzy_baby

according to the markscheme I got at least 60 - that should be an A right?

yea 80% is an A

lilangel890

I think it was quite disgusting where it said they want a length size x so that the probability of no faults is 0.

I've looked at that unofficially mark scheme and they use LOGS. Not C1 or C2 logs but bloody A2 level logs (ln) What the heck is all that about? I knew it was something I hadn't done but I'm sure stats only requires knowledge of C1/C2 (if that, since some people do standalaone statistics) What the hell was all that about? So lost marks there (thanks edexcel :s-smilie:

) and also with the lower quartile q (think I forgot to integrate)

Ack <_<

yeah the x length was a really tough question
but it does say in the syllabus that C1,2,3 knowledge is assumed and may be tested on
sorry that probs wont make u feel any better :frown:

Reply 303

AndersonsBentFoot

phoenix90

yeah the x length was a really tough question
but it does say in the syllabus that C1,2,3 knowledge is assumed and may be tested on
sorry that probs wont make u feel any better :frown:

What if your in year 12 and doing S2 with Further MATHS? I dont have any C3 knowledge

Reply 304

phoenix90

AndersonsBentFoot

What if your in year 12 and doing S2 with Further MATHS? I dont have any C3 knowledge

Your maths teacher or maths department should realise that and know whats on the syllabus so they can organise which units to teach u in which year etc so that u have all the requierd knowledge. I'm sure they wont send u into an exam without covering the syllabus...or I dunno, depends on your 6th form..

Reply 305

jeeano

hey guys doing further maths and in y12 like me
u didnt need to use logs at all
i did it without using logs
btw is the unofficial markscheme definitely right?
if it is...GREAT...i only lost a max of 3 marks!
but i still think the Grade boundaries will be lowered cos loads of my mates found it realli hard
so keep your fingers crossed guys and dont be so negative! :biggrin:

Reply 306

lilangel890

15

phoenix90

yeah the x length was a really tough question
but it does say in the syllabus that C1,2,3 knowledge is assumed and may be tested on
sorry that probs wont make u feel any better :frown:

Could you possibly link me to that please? I've had a glance at the 08 spec and can't see anything about knowledge of C3. It even says Mathematics AS and further mathematics AS as a possible way of cashing in units -_-

Tis ridiculous :frown:

Reply 307

angad7.10

anyone have the paper or a markscheme with the marks for each question indicated?
thanks in advance

p.s. i downloaded the markscheme that was posted before, but i couldnt see the marks..
thanks for posting the markscheme! pos rep coming your way

Reply 308

Waterstorm

16

angad7.10

anyone have the paper or a markscheme with the marks for each question indicated?
thanks in advance

p.s. i downloaded the markscheme that was posted before, but i couldnt see the marks..
thanks for posting the markscheme! pos rep coming your way

http://www.thestudentroom.co.uk/showthread.php?t=926229&page=7

Post 131.

Reply 309

crrrrrash

2

victoria13

damn it!!! i think i lost one mark :frown:

no! not ONE WHOLE MARK?!?!

but yeah same lost one fo sho, and probs a couple more through working etc
hopefully we'll be able to drop 1 or 2 and still get 100UMS (Y)

Reply 310

exppex

8

AndersonsBentFoot

What if your in year 12 and doing S2 with Further MATHS? I dont have any C3 knowledge

It specifically said show that x = 1.7 to two significant figures (not to find x).

Therefore if you found e^(-2x/15) = 0.8

let f(x) = e^(-2x/15) use numerical methods here:
f(1.65)
f(1.75)

Which would show x =1.7 to two sig fig. This is sometimes used in showing that the median is a certain number when F(m) is a cubic function.

Reply 311

username233985

crrrrrash

no! not ONE WHOLE MARK?!?!

but yeah same lost one fo sho, and probs a couple more through working etc
hopefully we'll be able to drop 1 or 2 and still get 100UMS (Y)

yes that would be nice!!!

Reply 312

vadzy_baby

Does anyone knoe where I can get hold of the grade boundaries for the Jan 09 S2 paper?
I saw it on TSR earlier, but I cant find it now.
Thanks

Reply 313

kat_ie

i did awfully, dropped a million marks.
before the exam i had a spaz attack at my teacher who swore on his life, bet me £1000, that the normal approximation wouldn't come up because it's no longer on the syllabus. well.
i got that standard deviation Q right surprisingly... that was about it!
i messed up on easy ones.
faaail.
:frown:

Reply 314

Gone Revising

11

Your teacher told you that the normal approx is no longer on the syllabus?

Reply 315

syn3rgy

Gone Revising

Your teacher told you that the normal approx is no longer on the syllabus?

hahahaha - too funny

i never trust teachers with the syllabus - i always go through them by myself

Reply 316

phoenix90

lilangel890

Could you possibly link me to that please? I've had a glance at the 08 spec and can't see anything about knowledge of C3. It even says Mathematics AS and further mathematics AS as a possible way of cashing in units -_-

Tis ridiculous :frown:

Ok I rechecked and I read the wrong syllabus, on the M2 syllabus it says C1-3 knowledge is required, but it doesnt say that on S2, I just assumed the prerequisites would be the same

but on S2 it says evaluation of the exponential function may be tested

the specification is on the edexcel website http://www.edexcel.com/quals/gce/gce-leg/maths/Pages/default.aspx
S2 is on page 65 ish

Reply 317

lilangel890

15

phoenix90

Ok I rechecked and I read the wrong syllabus, on the M2 syllabus it says C1-3 knowledge is required, but it doesnt say that on S2, I just assumed the prerequisites would be the same

but on S2 it says evaluation of the exponential function may be tested

the specification is on the edexcel website http://www.edexcel.com/quals/gce/gce-leg/maths/Pages/default.aspx
S2 is on page 65 ish

Thanks. Tis rather vague though isn't it? Evaluation could just mean plugging in numbers into the P(X=x) formula. Hmm I'll speak to the head of maths when I go in on friday for C2.

Reply 318

zafaru123

12

I had a different approach to the ln one. I used e^-lambda =0.8, i found out what lambda was, and since i knew it was 2faults per 15m, i worked out how many metres I got by using the lambda value i worked out.

Reply 319

supergirl48

^that's EXACTLY what i did. it seemed to work so hopefully we get some marks :smile:

Edexcel A level S2 June 2009

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