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# Edexcel A2 C4 Mathematics June 2015 - Official Thread Watch

1. (Original post by 11234)
How many marks lost for getting 32(In2)^2 +32In2 - 12
I'm confused; I believe that is the correct answer.
2. (Original post by s.c.a1)
what did you guys get for the k value on intergration i got 4 but i was rushing that question as i was running out of time??
I also got 4!

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3. (Original post by gGinaa)
If you got an answer wrong on part a and used it for part b, do you still get method marks on part b?

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Yes, they usually allow follow-through marks
4. (Original post by s.c.a1)
what did you guys get for the k value on intergration i got 4 but i was rushing that question as i was running out of time??
I got that too I think most people got that one.
5. (Original post by gGinaa)
If you got an answer wrong on part a and used it for part b, do you still get method marks on part b?

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Yes; you get the method marks but not the accuracy marks. Provided, of course, your method is correct.
6. (Original post by C++)
I'm confused; I believe that is the correct answer.
Yeah that is the right answer... I think?
7. (Original post by mc1996)
These are all my solutions. sorry for the poor quality but should be still readable
Shouldn't it be - 8y for the implicit differentiation question? You put +8y
8. Would 50 be a C?
9. (Original post by ag00ner)
Think you need to use sin rule?
I thought you would just need to use the normal trig ratios
10. Btw for Q1 I went to x^3 instead of x^2 to estimate root 2. How many marks would I lose I am out by such a small margin???
11. (Original post by C++)
Yes; you get the method marks but not the accuracy marks. Provided, of course, your method is correct.
how many drop
12. Hey, if in 3 I integrated from 0 to ln2 instead of 4ln2 how many marks will that be?
Also if in 8 I used 2-1/ln3 as my upper limit instead of 2 how many marks will that be? Everything else was right.
13. (Original post by C++)
I'm confused; I believe that is the correct answer.
No it's 32In2^2 -32In2 +,12
14. would c3 67/75 and c4 67/75 be enough for an A*?
15. (Original post by target21859)
Shouldn't it be - 8y for the implicit differentiation question? You put +8y
Yes someone has just pointed that out. It should be -8y
16. (Original post by Naga7o)
Here's a MS

http://imgur.com/a/OMb2o
On question 2.a how did you get +8y from differentiating -4y^2?
17. fuuuuuuuuuuudge the last one i forgot to do y^2,ffs!!!
18. Arseyyyyyyyyyyyyyyyyyyyy
19. (Original post by Yua)
how many drop
Be more specific; how many marks was the question? What question was it?
20. C4 Edexcel Maths Paper with SOLUTION - 16 June 2015.pdf
C4 Edexcel Maths Paper with SOLUTION - 16 June 2015.pdf
C4 Edexcel Maths Paper with SOLUTION - 16 June 2015.pdf

http://www93.zippyshare.com/d/sxvc4j...une%202015.pdf

http://www93.zippyshare.com/v/sxvc4j9n/file.html

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