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# AQA Maths Core 1+2 May 2013 Watch

1. then there was the differentiation wasn't there...

of something to get 4x^3 - 16x = dy/dx

then you had to show that at x = -3 it was a minimum...
so d2y/dx2 = 12x^2-16
12(-3)^2-16
= 92
> 0 therefore min at x=-3
2. something about simplifying to get x^3 - 4x + (?)
by dividing the 1st derivative by 4 too
3. In this question "The transformation of [2 -0.7] was √((x-2)3 +1) -0.7" I made a stupid mistake and put "-1" rather than "+1". How many marks will I lose and will I get follow through marks when working out G(4)?
4. (Original post by HenryLeather)
In this question "The transformation of [2 -0.7] was √((x-2)3 +1) -0.7" I made a stupid mistake and put "-1" rather than "+1". How many marks will I lose and will I get follow through marks when working out G(4)?
probably one mark only
5. Looks like ill be resitting. Hoping the d1 will be better and easier paper
6. for the binomial with x^-2 i let y become this throughout all of the simplifying and expanding and then switched at the end to get (x^-2)^2 and the number before but i cant remember what that was would this still be right
7. IN C2:
How many marks was the integral question?
How many marks were both the translation questions?
8. Any estimates on what 100 UMS will be?
9. PAPERS & SOLUTIONS HERE

http://www.thestudentroom.co.uk/show...6#post42602016
10. Tried to add up my marks, and it came to 67/75. Any idea what UMS I am looking at? Estimate?
11. I'm thinking...

Looking at past boundaries

C1: (on the easy side)
A 63
B 57
C 51
D 45
E 39

C2: (was tricky, but nothing horrendous - average)
A 58
B 51
C 45
D 39
E 33

but.. I am guessing... haha
12. Guys keep this mark scheme alive i need answers
14. (Original post by maggiehodgson)
And the 2k question, I got k = 6/5
I would like to know how you got that. I struggled for ages and got nowhere near.[/QUOTE]

I got k =6/5 aswell, can't remember how i got it though :/
15. Hey guys,

IDK if anyone has already posted this on this thread but here you go!! FULL PAPER + MARK SCHEME!

http://www.mediafire.com/view/?go6r4dnf65kr8lz

16. Looking at the answers and slapping myself in the face.
17. (Original post by Integer)
Looking at the answers and slapping myself in the face.
Story of my life.
18. (Original post by stuart_aitken)
This is all I want to know:

For core 1

Integration question:
Area under curve was 524/15

Final question:
20/7 <= k <= 4

Correct or not...?

Posted from TSR Mobile
I got the same answer for the integration, but most people seem to have got 27. I think we might have mad a mistake somewhere.
19. Core 2 predicted grade boundaries anyone?
20. 60 for an A in Core 1 i think

57 for an A in Core 2

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