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Edexcel C2 20th May 2015 *Official Thread*

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Original post by gdunne42
Have you seen the paper yet?
I think your opinion poll is somewhat exaggerating the difficulty of this paper. Most of the questions were pretty standard stuff.

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I have and I have revised by predictions
Original post by Krollo
Well that's a spelling I haven't seen before :tongue:

I'd say two out of five marks lost.


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So how much marks will i get /9 if i got one intergral wrong but the rest of the intergrals right for a, and doing everything right for part but i will come out with the final answer?

ITS ****ING PISSING ME OFF SAME MISTAKE IN C1
Just retake a module you've done bad in next year
Original post by andrewoldfield98
For question 3 I used difference of two squares and factorised it to
F(x)=(2x+1)(√3x-4√3)(√3x+4√3)
Is this correct or is this not 'fully' factorised? How many marks would I get?


well no cus you can take a root 3 out can't you
come and vote at
http://www.thestudentroom.co.uk/showthread.php?t=3343941

Based on seeing the paper myself
I am estimating
73/75 for 100 UMS
61/75 for 80UMS Grade A
54/75 for 70 UMS Grade B
You know if you have a lot of working out and its a bit messy but you have the correct answer, will they still check through it all to check for it? i made a lot of mistakes of 2b at first then got the correct answer but not too sure if it will stand out to the examiner?
Original post by Yousf
So how much marks will i get /9 if i got one intergral wrong but the rest of the intergrals right for a, and doing everything right for part but i will come out with the final answer?

ITS ****ING PISSING ME OFF SAME MISTAKE IN C1


probably 2/9
MARK SCHEME FOR TODAY ::


https://a48aca6bcd82b5ada594d7397b730e907e9902c3.googledrive.com/host/0B1ZiqBksUHNYdUJldmdCUllHZ2M/Edexcel%20C2%20-%20June%202015%20Model%20Answers%20by%20Arsey.pdf
for question 3(c) I wrote (2x+1)(3x+12)(x+4), instead of 3(2x+1)(x+4)(x-4), because for some reason I thought that in order for it to be fully factorised the whole thing had to be in brackets. Will I still get marks?:s-smilie:
You know if you have a lot of working out and its a bit messy but you have the correct answer, will they still check through it all to check for it? i made a lot of mistakes of 2b at first then got the correct answer but not too sure if it will stand out to the examiner??
Original post by Ghazn Khan
for 8(ii) the question was 4sin^2 x+ cosx= 4-k
a) find k in terms of cos x.
b) when k=3, find x from 0<x<360

for a) i got 4cos^2 x-cos x=k
cos x(4cosx-1)=k
cos x =k or cos x=(1+k)/4


ahahah exact same :/
Original post by andrewoldfield98
For question 3 I used difference of two squares and factorised it to
F(x)=(2x+1)(√3x-4√3)(√3x+4√3)
Is this correct or is this not 'fully' factorised? How many marks would I get?


I did the same as you, my further maths teachers said that it's technically correct but they would have wanted you to take out the 3 to get 3(x-4)(x+4) but I'm not sure if our method is ok. Let me know if it is :smile:

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Original post by starkers1997
My Best Case Scenario:
C1: 70 UMS
C2: 53 UMS
So: 57 UMS Required in S1 for a C (87 for a B)


This wasn't mine haha
I've already got an A in AS maths
Original post by CiaranAhern
Because you can simplify the middle bracket by dividing by 3

Thats what I did as well :s-smilie:
Well i totally flopped in that exam. I got Q1-4 and 6 but eveything else was dreadful. Looks like i need to study hard for M1 Sigh
Original post by frozo123
probably 2/9


i'll only get 2 marks whattttt n00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
Original post by prithika98
Damn!! Would I lose a mark for that?

I'm guessing so. Do you think I would?I used difference of two squares and put
F(x) = (2x+1)(√3x+4√3)(√3x-4√3)
Original post by Ghazn Khan
for 8(ii) the question was 4sin^2 x+ cosx= 4-k
a) find k in terms of cos x.
b) when k=3, find x from 0<x<360

for a) i got 4cos^2 x-cos x=k
cos x(4cosx-1)=k
cos x =k or cos x=(1+k)/4


I did the exact same. Is this correct? someone reply
Original post by Freddy-Francis
I did the exact same. Is this correct? someone reply


According to arsey's markscheme it isn't I made this silly mistake aha
predicting 70 for C1 and 70 for C2 so thats atleast 90 UMS each meaning I ll have less pressure in C3 and C4, hopefully D1 goes well too

Q: for Q9 ii in C2 if u got the method right but the final answer was wrong do you get 3 or 4 marks out of 5. I wrote everything correct except the final answer ..

Good luck everyone

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