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

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    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


    June 2011 - http://www.thestudentroom.co.uk/show....php?t=1619003

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

    Good luck tomorrow.


    NOTE - 7b c is 7 NOT 6
    Attached Images
  1. File Type: pdf 12 May C1 RA.pdf (905.3 KB, 30369 views)
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    First comment!

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

    100-75
    90-68
    80-63

    The area question was bull ****...
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    (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.
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    Paper was quite simple apart from one or two questions. Boundaries could be quite high this time round
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    what did people get for state range ov values for c?
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    (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
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    (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.
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    Hell, I can't take it. Where are the solutions?
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    (Original post by TheGirlNextDoor)
    First comment!

    That felt so good...
    nerd
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    Why was the area not a triangle?!
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    (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.
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    (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!)
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    (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
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    (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.
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    (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
Updated: December 13, 2012
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