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# Edexcel C2 20th May 2015 *Official Thread* watch

1. http://www.thestudentroom.co.uk/atta...1&d=1432122106

2. (Original post by frozo123)
did you get 1/3 and 3/2 for y in the logs question?
Yes
3. (Original post by PotatoCrums)
Nope sorry
F211 tomorrow :////
You resitting?
Nooo

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5. (Original post by Boundless_x)
I think it was three marks
Hmm its strange that it was only three marks, cause there will be a mark for using sin^2=1-cos^2x, I would have thought there would have been more if you had to actually form a quadratic to find cos x! Rather than put 4cos^2x-cos x = k as I did!
6. Do you still need solutions or are they up? Mine are done.
7. (Original post by Oz_Vessalius)

Answer for cosx in terms of k. You get it by completing the square.
no disputing that is right but how is getting that just 3 marks in a c2 paper, including the stuff you had to do previously as well
8. come and vote at
http://www.thestudentroom.co.uk/show....php?t=3343941

Based

on the comments of reputable users,
and on the polling (allowing for skew)

I am estimating
71/75 for 100 UMS
51/75 for 70 UMS Grade B
9. (Original post by Rebeecccaahh)
Nooo

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Are you?

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10. Guys just wondering can we still retake modules even though A-levels are changing next year?
11. (Original post by coefficient)
Do you still need solutions or are they up? Mine are done.
Yours would be much appreciated
12. (Original post by CiaranAhern)
Same now I'm expecting S1 to be hard aswell
I worked out with one of my teachers that if i get almost 100% on S1 and scrape a C today there's still a possibility of an A. So, let's hope stats goes well I don't think I can handle another bad exam.
13. (Original post by joe1545)
Looking at the answers above the lowest i may have got in a worst case scenario with no method marks is 65, but given that I probably got a few method marks, id say the highest is 70.

For the factorisation question who got a = -16 and b = -32 ?

I then went on to factorise it, and even though 2x+1 was a factor I ended up getting a horrible answer.
a = -16 and b = -32
I believe this to be wrong, if you sub it back in it doesn't work for one of the equations. I got your answer first time round, but fixed it second time round. I divided my simultaneous equations and believe -48, -96 is correct.
14. (Original post by Anon_98)
Oh my I totally agree, UGH. wwhyuyyYyyy. Whats your next exam?

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I have OCR biology tomorrow then OCR chemistry on Friday! Wbu?
15. Page 139 for Arsey who has posted model answers now
16. does anyone have markscheme for tday's lesson
17. I dont C2 many people that were happy with the exam...
18. Is it possible to get an A in further maths and a B in maths?

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19. (Original post by Dinodindan)
Except maybe 8)ii)a)
Similar to mine (to what i remember)
20. (Original post by Jonooo123)
Hmm its strange that it was only three marks, cause there will be a mark for using sin^2=1-cos^2x, I would have thought there would have been more if you had to actually form a quadratic to find cos x! Rather than put 4cos^2x-cos x = k as I did!
I thought exactly the same thing, so we made the same mistake

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