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# Edexcel C1 16 May 2012 Post Exam Thread - Paper and Solutions in the FIRST POST Watch

1. C1 May 2012

Reasonable paper with plenty of straight forward marks and some more challenging ones.

Q1 – Integration – standard question.
Q2 – Indices – more complicated than normal, but relatively easy.
Q3 – Surds – standard.
Q4 – Differentiation – Quite easy.
Q5 – Recurrence relations – fairly standard apart from an unusual inequality in the final part.
Q6 – Arithmetic sequences and series – a) pretty easy b) not really that hard either
Q7 – Integration and coordinate geometry – standard
Q8 – Quadratics – The negative aspect definitely makes it harder than standard, potentially a bloodbath this one.
Q9 – Coordinate geometry – reasonable a-d) but understanding e) was not easy, extreme bloodbath, but only 3 marks
Q10 – Very easy transforming graphs.

Last 3 June boundaries were 58/59/55 for 80 UMS. I would be surprised if these boundaries are very different from those last summer.
I am going to guess
73 = 100ums
66 – 90ums
59 – 80ums
52 – 70ums
45 – 60ums
38 – 50ums
31 – 40ums

This thread will be locked at somepoint and then unlocked at midnight following the Core 1 examination. I will upload the paper and my solutions to this post.
I will do my best to answer questions about the paper but please try to read the thread first so that I am not answering the same questions lots of times.Here are some links to previous C1 threads, they are worth a read and you will see what the common errors were...

Jan 2012 - http://www.thestudentroom.co.uk/show....php?t=1892663

(the second one contains loads of past papers, model solutions, etc)

Good luck tomorrow.

NOTE - 7b c is 7 NOT 6
Attached Images
2. 12 May C1 RA.pdf (905.3 KB, 30462 views)
3. First comment!

That felt so good...
4. Second - you can see how eager I am to see this paper!
5. Possible boundaries?
6. Ok here we go... I thought that paper was rather tricky so I don't really know what to expect.
8. (Original post by Shack93)
Possible boundaries?
I think they'll be quite high

100-75
90-68
80-63

The area question was bull ****...
9. (Original post by The Assassin)
Ok here we go... I thought that paper was rather tricky so I don't really know what to expect.
Agreed - am a bit gutted as I thought C1 was a chance to get full UMS but know for a fact I've missed that.
10. Paper was quite simple apart from one or two questions. Boundaries could be quite high this time round
11. what did people get for state range ov values for c?
12. (Original post by 0range)
I think they'll be quite high

100-75
90-68
80-63

The area question was bull ****...
Ugh, I didn't finish that area question
13. (Original post by 0range)
I think they'll be quite high

100-75
90-68
80-63

The area question was bull ****...
Hopefully I got 69. yeah it was I know I lost a couple marks there.
14. Hell, I can't take it. Where are the solutions?
15. (Original post by TheGirlNextDoor)
First comment!

That felt so good...
nerd
16. Why was the area not a triangle?!
17. (Original post by Kidioteque)
Agreed - am a bit gutted as I thought C1 was a chance to get full UMS but know for a fact I've missed that.
Same, I was retaking to improve on 91 because of my C in core 3 and need to get and A overall.
18. (Original post by master_blaster66)
what did people get for state range ov values for c?
C <(or equal to) 2

(I think it was that way round - I flipped the inequality, can't remember what it ended up as though!)
19. (Original post by master_blaster66)
what did people get for state range ov values for c?
Got C as 2
FFS I forgot to change the sign!!!

(Original post by TheGirlNextDoor)
Ugh, I didn't finish that area question
LOL I spent like 20 mins on that question, mainly because I had the crappiest diagram ever but in the end I got 90 for that
20. (Original post by syNK)
Why was the area not a triangle?!
I split it into 2 triangles to work it out, took me forever though.
21. (Original post by TheGirlNextDoor)
C <(or equal to) 2

(I think it was that way round - I flipped the inequality, can't remember what it ended up as though!)
yeahhh i got that

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