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Edexcel A2 C4 Mathematics June 2015 - Official Thread

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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?


Posted from TSR Mobile


Yes, they usually allow follow-through marks
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 :smile: I think most people got that one.
Reply 3222
Avatar for C++
C++
7
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?


Posted from TSR Mobile


Yes; you get the method marks but not the accuracy marks. Provided, of course, your method is correct.
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
Original post by C++
I'm confused; I believe that is the correct answer.


Yeah that is the right answer... I think?
Would 50 be a C?
Original post by ag00ner
Think you need to use sin rule?


I thought you would just need to use the normal trig ratios
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???
Reply 3228
Avatar for Yua
Yua
14
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
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.
Reply 3230
Avatar for 11234
11234
8
Original post by C++
I'm confused; I believe that is the correct answer.


No it's 32In2^2 -32In2 +,12
would c3 67/75 and c4 67/75 be enough for an A*?
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
Original post by Naga7o


On question 2.a how did you get +8y from differentiating -4y^2?
fuuuuuuuuuuudge the last one i forgot to do y^2,ffs!!!
Arseyyyyyyyyyyyyyyyyyyyy
Reply 3236
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C++
7
Original post by Yua
how many drop


Be more specific; how many marks was the question? What question was it?
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

Please rep when downloading, cheers.


Direct Download:
http://www93.zippyshare.com/d/sxvc4j9n/962485/C4%20Edexcel%20Maths%20Paper%20with%20SOLUTION%20-%2016%20June%202015.pdf

http://www93.zippyshare.com/v/sxvc4j9n/file.html
What was question 5a???
Hey is there ecf in c4?

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