You are Here: Home >< Maths

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

Announcements Posted on
Last day to win £100 of Amazon vouchers - don't miss out! Take our quick survey to enter 24-10-2016
1. (Original post by StrawberryKoi)
That's what I did, surely we won't lose a mark for simplifying it further I hope
yeah I wouldnt think so! well hope not, how did you do besides that?
2. If they can't see anything in pencil they request the actual copy of the paper and mark it from that. Also, my teacher said they follow the principle of stop marking once the answers reached, so any un-necessary simplifying, right or wrong, should be ignored.
3. Will I lose 1 mark for not simplifying 1(b)? I forgot to cancel the x squared out.
4. (Original post by CharrrrxD)
yeah I wouldnt think so! well hope not, how did you do besides that?
I think the rest of it was okay, except the last question which I struggled with for a good 20 minutes or so, but I think I got there in the end. I used the second method Arsey used for 8c.

At school I kept asking people if anyone else had used the quadratic formula as well but all I got was blank faces haha, pretty discouraging.

How did you find it?
5. (Original post by StrawberryKoi)
I think the rest of it was okay, except the last question which I struggled with for a good 20 minutes or so, but I think I got there in the end. I used the second method Arsey used for 8c.

At school I kept asking people if anyone else had used the quadratic formula as well but all I got was blank faces haha, pretty discouraging.

How did you find it?
Yeah the last question was hard, I just stared at 8a for ages then it clicked phew!
I found it ok, its just those other 2 mistakes I put before! Kinda silly and annoying. Just hoping I may gain a couple of method marks somewhere along the way - if we dont get penalised for taking out the x then the worst I got is 68, just gotta hope thats good enough for 90ums or that I do get a couple of method marks from my silly mistakes (yn)
6. Arsey always uploads the solutions then runs off to bed grrr

jkjk we love you no homes
7. (Original post by Expendable)
If they can't see anything in pencil they request the actual copy of the paper and mark it from that. Also, my teacher said they follow the principle of stop marking once the answers reached, so any un-necessary simplifying, right or wrong, should be ignored.
I really hope you're right!(About the stop marking once ans reached)
+1
8. (Original post by CharrrrxD)
Yeah the last question was hard, I just stared at 8a for ages then it clicked phew!
I found it ok, its just those other 2 mistakes I put before! Kinda silly and annoying. Just hoping I may gain a couple of method marks somewhere along the way - if we dont get penalised for taking out the x then the worst I got is 68, just gotta hope thats good enough for 90ums or that I do get a couple of method marks from my silly mistakes (yn)
I do hope Arsey will get back to us about the simplifying thing. Don't worry I'm sure you'll get that A*! Not looking forward to results day though
9. (Original post by Arsey)
Reasonable paper I thought
two questions:
for the domain do you need xER as well as x>0

for question 6d you have to sub the values into (3+sin(1/2x)/2))-x
this sort of question came up in june 2006
10. Ahhhhh i left t=28 such a silly mistake.

And that last part where you had to show that the x co-ord was 1.9078 just wasnt working out for me!

Other than that i was fine, i reckon 70 or 71 from the 75
11. (Original post by Scott.M)
UMS 100 90 80 70 60 50 40

Jan-09 75 68 60 52 44 36 29
Jun-09 75 71 67 59 52 45 38
Jan-10 73 66 59 52 45 39 33
Jun-10 75 69 62 55 48 41 34
Jan-11 75 68 61 53 45 38 31
June-11 75 70 65 58 51 44 37

Those are the UMS for the previous C3 exams, dunno if that helps maybe someone can remember the past papers and how hard they were compared to this one.

I think i got 66, 67 or 68 marks (depending on if you get a mark for 28 minutes instead of 12:28 and if I get a method mark for 8c), hoping it's an A* if not hoping for a high A which i can drag up to an A* if i do really well in C4. :P
I dont know about anyone else but i found this paper comparatively much harder than both June and Jan 2011, as this paper had many more trickier questions than the last two papers..so hoping boundaries are around 68..how did u find the paper?
12. 74
67
60
53
I think

someone clearly got 73 and is offended
13. (Original post by Kenan and Kel)
74
67
60
53
I think
just to be clear your predicting a minus one mark from 75(74) as an a*?? Isn't that pretty high??
14. 74 (stupid t=28)
67
60
51
15. (Original post by Ellis246)
just to be clear your predicting a minus one mark from 75(74) as an a*?? Isn't that pretty high??
74=100
16. (Original post by ha7493)
Ahhhhh i left t=28 such a silly mistake.

And that last part where you had to show that the x co-ord was 1.9078 just wasnt working out for me!

Other than that i was fine, i reckon 70 or 71 from the 75
I made the same mistake with the 1.9078, apparently we were supposed to substitute 1.90775 and 1.90785 into f'(x)
17. (Original post by Ellis246)
what on earth? why again 74 as an a*? I mean honestly? Is it really going to be that high??
For 100 UMS

sorry
18. lol come on now, would they really make 1 mark = 10ums
19. (Original post by dude345)
For 100 UMS

sorry
nah nahh, its my fault, someone else told me that i only just saw the post :P got me soo worried there! okay, so does that mean ur predicting the next number down as 80 UMS etc?
20. (Original post by Kenan and Kel)
74=100
ah, thanks

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
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
1. Oops, you need to agree to our Ts&Cs to register

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.

This forum is supported by:
Today on TSR

### How does exam reform affect you?

From GCSE to A level, it's all changing

### Who would you like to thank?

Poll
Useful resources

Can you help? Study help unanswered threadsStudy Help rules and posting guidelinesLaTex guide for writing equations on TSR

## Groups associated with this forum:

View associated groups
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

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