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# AQA Core 4 Exam Discussion 14/06/2012 !Poll, paper and unofficial MS (first post)! Tweet

Maths exam discussion - share revision tips in preparation for GCSE, A Level and other maths exams and discuss how they went afterwards.

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• View Poll Results: How did you find the exam?
 Pshh I could do it in my sleep! 14 5.56%
 Went pretty well 29 11.51%
 It was okay... (maybe made silly mistakes?) 82 32.54%
 62 24.60%
 I died. 61 24.21%
 Fine I guess, couldn't careless. 4 1.59%

1. Re: AQA Core 4 Exam Discussion 14/06/2012
(Original post by SKA222)
hey but doesn't the inequality sign flip when divided or multiplied by a negative number...
I don't know xD sorry. Anyways there's no point worrying about it now, not like we can change our answers.
2. Re: AQA Core 4 Exam Discussion 14/06/2012
Your poll is very subjective, maybe we could have the options for the amount of UMS we reckon we're going to lose as opposed to past papers :]

I've gone down like 20 UMS from past papers.
3. (Original post by mollster57)
What came first? Finding T or finding N? I can't remember what I got for the first one, but I got 28 for the last part of the question I think. Is that right?
More importantly, what came first, the dinosaur or the egg?

Just kidding..I think T was last

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4. Just realised my mistake finding T.. :-(
To do it using logs you need to put 1500(1.015)^n = 1000(1.03)^n
(1.015)^n/(1.03)^n = 2/3
(1.015/1.03)^n = 2/3
n = log{1.015/1.03}(2/3)
Where 1.015/1.03 is the base
n =27.6
T = 28

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5. Re: AQA Core 4 Exam Discussion 14/06/2012
Hey all,

I've attached today's C4 paper.

Maybe someone can make a detailed unofficial MS?

Edit 2: marks for Q5 are ai) 4 marks, aii) 2
marks, b) 3 marks
Sorry for any inconvenience caused.
Attached Thumbnails

Last edited by Cath-ay; 16-06-2012 at 12:03.
6. Re: AQA Core 4 Exam Discussion 14/06/2012
Let's just give ourselves a pat on the back for doing a hard exam and don't worry about grades. In the long run they don't really matter...really
7. Re: AQA Core 4 Exam Discussion 14/06/2012
(Original post by Dangerous Theory)
Yeah trial and error has always been accepted afaik. It was something like Tln1.03 = ln3/2 + Tln1.015, so Tln(1.03/1.015) = ln3/2, divide for T

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Thank you too! I also did trial and error. So that's 4 more marks gained but one mark less (I thought that the range was |x|<4?).

In a worst case scenario 56/75. Hopefully still a B!
Last edited by JulietheCat; 14-06-2012 at 14:39.
8. Re: AQA Core 4 Exam Discussion 14/06/2012
(Original post by Cath-ay)
Hey all,

I've attached today's C4 paper.

Maybe someone can make a detailed unofficial MS?
thanks for this but like where did you get this from lool :O
9. (Original post by Cath-ay)
Hey all,

I've attached today's C4 paper.

Maybe someone can make a detailed unofficial MS?
6th attachment seems partly missing

This was posted from The Student Room's iPhone/iPad App
10. (Original post by tom24s)
Let's just give ourselves a pat on the back for doing a hard exam and don't worry about grades. In the long run they don't really matter...really
For those of us with aspirations, they matter a lot.

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11. Re: AQA Core 4 Exam Discussion 14/06/2012
(Original post by Raj K)
thanks for this but like where did you get this from lool :O
Made it out of playdough... Lol jk, I asked my amazing maths teacher for it.
12. (Original post by Cath-ay)
Made it out of playdough... Lol jk, I asked my amazing maths teacher for it.
Hahahahaa!

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13. Re: AQA Core 4 Exam Discussion 14/06/2012
(Original post by Cath-ay)
Hey all,

I've attached today's C4 paper.

Maybe someone can make a detailed unofficial MS?

Thank you so much! If I have counted correctly, I think I've got around 63 raw marks, and I know the grade boundaries change from paper to paper, but can anyone give a rough estimate of what UMS that would be? Sorry for asking and being a pain, but I'm not really that good with guessing the grade boundaries if its a hard/easy paper etc thanks
14. Re: AQA Core 4 Exam Discussion 14/06/2012
(Original post by Dangerous Theory)
6th attachment seems partly missing

This was posted from The Student Room's iPhone/iPad App
oh damn. should have checked before posting. I'll scan it again.
15. Re: AQA Core 4 Exam Discussion 14/06/2012
(Original post by Cath-ay)
Hey all,

I've attached today's C4 paper.

Maybe someone can make a detailed unofficial MS?
thank you
16. Re: AQA Core 4 Exam Discussion 14/06/2012
Someone earlier said 65/75 June 2011 was 100%UMS...so any chance say, 70/75 for this paper will be 100%UMS?
17. Re: AQA Core 4 Exam Discussion 14/06/2012
(Original post by Quexx)
Close to I reckon, but what did you write as your differential equation?
dh/dt=

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dx/dt= k(2-h).
18. Re: AQA Core 4 Exam Discussion 14/06/2012
(Original post by LGrosvenor101)
Thank you so much! If I have counted correctly, I think I've got around 63 raw marks, and I know the grade boundaries change from paper to paper, but can anyone give a rough estimate of what UMS that would be? Sorry for asking and being a pain, but I'm not really that good with guessing the grade boundaries if its a hard/easy paper etc thanks
If it's like last June, A* (about 95 maybe), if it's like Jan, A/A* (around 90)..if it's a normal paper, then an A/B

Meh. I fail at guessing too.
19. Re: AQA Core 4 Exam Discussion 14/06/2012
(Original post by tom24s)
Let's just give ourselves a pat on the back for doing a hard exam and don't worry about grades. In the long run they don't really matter...really
Maths is part of my uni offer. B or higher, they said. I can get the other As in my other subjects but Maths is the sting in the tail.
20. Re: AQA Core 4 Exam Discussion 14/06/2012
(Original post by tom24s)
Let's just give ourselves a pat on the back for doing a hard exam and don't worry about grades. In the long run they don't really matter...really
in the short term, for getting into university, they do

...but you're right tho, it was a hard paper and we deserve some credit
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