You are Here: Home >< Maths

# Edexcel C4 Monday 25th January 2010 (AM) watch

1. OH MY GOD!! i just realised i may have got question 1c wrong lol. I think i may have forgotten to multiply by 5 Any guess to how many marks would lose for that? and how many marks lost for getting 324 instead of 648? Those are the only marks i lost so there is hope for 100!
2. hey Arsey thanks for the solutions your answers match mine =)
3. (Original post by keeranj)
does anyonr remember question 7 , 8
As far as I can remeber, 7 is 648 and 8 is 4p(root(3)-1) or smth like that=D
4. how do you actually view the c4 mark scheme??
5. hey there, just wondering, anyone have a guess at how many potential marks lost from the following:

1) forgot to multiply by 5

Vector question: Last bit, I did the wrong perpendicualar bisector(I did the right angle opposite)
Q7) I produced the correct integral, but when Expanding out I forgot to multiply one of the terms by 10, so as a result one one of expressions was correct the 30t^3, Is What I obtained for one part, but then got the next part wrong, (although I carried on and multiplied by 2)

For question 8( I cannot rememeber what my answer was, although I do remember getting Sqrt3-1

something along those lines!

thank you, any chance of getting 90%, i hear 71 raw marks usually equates to 100ums, how about 65 raw marks?
6. (Original post by Tangoed)
Does anyone know when abouts the results will be released? I have no idea cos i took the paper as an external candidate...
hey, how do you view the answers for the c4 25th january 2010???????
7. (Original post by bigbosss)
well I hope not as I made a stupid mistake on the last one
8. (Original post by WillHJ)
hey, how do you view the answers for the c4 25th january 2010???????
I posted the solutions on page 9? go back a couple of pages.

However, I made a daft error on the last one, so my answer is double what it should be. The rest are correct though (to my knowledge).
9. (Original post by sulexk)
hey there, just wondering, anyone have a guess at how many potential marks lost from the following:

1) forgot to multiply by 5

Vector question: Last bit, I did the wrong perpendicualar bisector(I did the right angle opposite)
Q7) I produced the correct integral, but when Expanding out I forgot to multiply one of the terms by 10, so as a result one one of expressions was correct the 30t^3, Is What I obtained for one part, but then got the next part wrong, (although I carried on and multiplied by 2)

For question 8( I cannot rememeber what my answer was, although I do remember getting Sqrt3-1

something along those lines!

thank you, any chance of getting 90%, i hear 71 raw marks usually equates to 100ums, how about 65 raw marks?
My best guess would be

58/75 - 80UMS
66/75 - 90UMS
74/75 - 100UMS

Very difficult one to predict since not many people will have done C4 in Jan
10. Hey there arsey, just wondering, any ideas on how many marks I would lose for question 7?

I produced the correct integral with the correct limits(3 and 0 - I also doubled at the end)

However when expanding the expression I forgot to multiply one of the terms by 10, so I got one part of the final integral correct, but then got the other incorrect leading to an incorrect solution.

any ideas?

thanks!
11. You'll lose no more than 2 marks, possibly only one. It's a basic arithmetic error, so they might even give you ECF, but since it was all part of one question you might not. I wouldn't lose sleep over it anyway.

Can anyone confirm whether or not the question on radius of a circle (ans=0.299) required 3sf? I gave the answer exact then wrote 0.3 just.
12. (Original post by Deno_7951)
You'll lose no more than 2 marks, possibly only one. It's a basic arithmetic error, so they might even give you ECF, but since it was all part of one question you might not. I wouldn't lose sleep over it anyway.

Can anyone confirm whether or not the question on radius of a circle (ans=0.299) required 3sf? I gave the answer exact then wrote 0.3 just.
Go to page 3 paper is posted there -.-'
13. (Original post by Arsey)
My best guess would be

58/75 - 80UMS
66/75 - 90UMS
74/75 - 100UMS

Very difficult one to predict since not many people will have done C4 in Jan
Good point - but looking at years past - your estimates seem to be correct - with 1/2 UMS difference....
14. (Original post by Arsey)
I don't know what you mean about 3c

seemed a pretty standard paper to me. I would guess 58-59 / 75
sorry i meant 2cii, i see i made the mistake, not you. i added 4 instead of subtracting it, so i got 17, in the bracket, instead of 15 for my final answer, OMG lost an A1 ((((((((((

i think you got a bit more than that tbh, i saw only few errors, could you explain to me why you doubled the area on 7b?
15. (Original post by sulexk)
Hey there arsey, just wondering, any ideas on how many marks I would lose for question 7?

I produced the correct integral with the correct limits(3 and 0 - I also doubled at the end)

However when expanding the expression I forgot to multiply one of the terms by 10, so I got one part of the final integral correct, but then got the other incorrect leading to an incorrect solution.

any ideas?

thanks!
clearly the accuracy mark and perhaps another.
16. (Original post by Rough Inclined Plane)
sorry i meant 2cii, i see i made the mistake, not you. i added 4 instead of subtracting it, so i got 17, in the bracket, instead of 15 for my final answer, OMG lost an A1 ((((((((((

i think you got a bit more than that tbh, i saw only few errors, could you explain to me why you doubled the area on 7b?
because integration between 0 and 3 only gives the area above the x-axis. Basic symmetry means you need to double it to get the complete area. Alternatively, you could have integrated between 3 and -3 which I didn't think of.
17. I failed this spectacularly. -______-
18. (Original post by Arsey)
clearly the accuracy mark and perhaps another.
Yep....But for the second answer, you should get the follow through marks.
19. Failure of an exam. Hope i got better than a D this time.
20. i think for que 8 part c posted in the answer is not correct...the volume should be multiplied by only pi not 2pi...pls check tat out

### Related university courses

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:
Updated: May 14, 2010
The home of Results and Clearing

### 2,141

people online now

### 1,567,000

students helped last year
Today on TSR

### University open days

1. Sheffield Hallam University
Tue, 21 Aug '18
2. Bournemouth University
Wed, 22 Aug '18
3. University of Buckingham
Thu, 23 Aug '18
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

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