C3 Jan 2012 Edexcel - Post exam discussion - Solutions and paper in first post

Announcements Posted on
    • Thread Starter
    Offline

    2
    Reasonable paper I thought

    Boundaries

    Jan C3 boundaries have been fairly consistent in recent years; 61, 59, 60

    I would say Jan 11 (61) was the most challenging of the 3.

    I think Jan 12 was significantly easier than Jan 11, so I can only think that the boundaries will increase


    My best guess is....


    75 = 100UMS
    69 = 90UMS
    63 = 80UMS
    57 = 70UMS
    50 = 60UMS
    43 = 50 UMS
    36 = 40UMS
    Attached Images
  1. File Type: pdf 12 Jan C3 Model.pdf (919.9 KB, 22114 views)
    Offline

    0
    ReputationRep:
    thanks
    Offline

    0
    ReputationRep:
    thanks arsey
    what you think the grade boundary will be?
    Offline

    0
    ReputationRep:
    for q1 if i forgot to simplify how many marks would i lose
    Offline

    0
    ReputationRep:
    Will I lose a mark for leaving my answer as 28 minutes (to the nearest minute)
    Offline

    0
    ReputationRep:
    thanks
    Offline

    0
    ReputationRep:
    I think I got a high B or a low A ><
    Offline

    2
    ReputationRep:
    Got time = 27.7 for the one question but didn't add it on to midday :/ grrr.
    Offline

    0
    ReputationRep:
    oh yeah 1 mark off
    domain of f^-1(x)

    74/75 done
    Offline

    1
    ReputationRep:
    If I put 2 extra solutions for question 5, am I likely to be marked down?
    Offline

    0
    ReputationRep:
    Thank you! 75/75 if 28 minutes past midday is allowed lol.
    Offline

    2
    ReputationRep:
    75/75 reemo
    Offline

    2
    ReputationRep:
    What's your guestimates for grade boundaries?

    Made a stupid mistake on the second differntiation question and a couple of others :facepalm2:
    Offline

    2
    ReputationRep:
    (Original post by annagoesbroom)
    If I put 2 extra solutions for question 5, am I likely to be marked down?
    Think so
    Offline

    0
    ReputationRep:
    Concurred with the model answers on all questions, guessing a slightly above average grade boundary since a couple were trickier than usual.
    Offline

    2
    ReputationRep:
    Arsey - do you think there will be any mark lost for putting that t= 28 minutes to the nearest minute instead of 12:28 as an actual 24h time? Otherwise full marks!
    Offline

    0
    ReputationRep:
    74... Damn, 12.28, what a cursed time!
    Offline

    0
    ReputationRep:
    For the normal to the curve, i got the correct x coordinate, the right dy/dx in terms of y but somehow worked the gradient out as -1/2 not -8. After that i made an equation using that gradient. How many marks will i have lost?

    Got everything else right except the domain, i didn't know what was going on :P
    Offline

    0
    ReputationRep:
    Thanks Arsey Just confirmed my suspicions that I mess up Q8 but very very surprised but happy to find out that I got that 10 marker right Few silly mistakes... time in minutes thing... but other than that alright.
    Grade boundary predictions would me greatly appreciated if possible!
    Offline

    2
    ReputationRep:
    Not too bad
 
 
 
Write a reply… Reply
Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: January 20, 2013
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Poll
Wake up and smell the...
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.