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Edexcel A2 C4 Mathematics June 2015 - Official Thread

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Original post by mc1996
These are all my solutions. sorry for the poor quality but should be still readable


Lol, did you redo the whole paper when you got home??

Or are you a maths teacher? :smile:
Original post by Igooo
Yeah, you're right. I've drawn the wrong triangle. Thanks!


How low do you think the boundaries will be? same as june 13R paper or higher?;P
Original post by Dylann
I did it in degrees too. Apparently we may get some marks...

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If your method was correct you'll lose A1

Check out June 2007 8d, answer in radians is underlined
Original post by gGinaa
How much is 80ums in this exam?


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Probably around 60, maybe a couple more.
Original post by Naga7o


For q2 you got the +8y dy/dx
It's minus
Reply 3205
Avatar for Igooo
Igooo
2
Original post by TAPTUT
Da hell is he?


He's Jesus' grandpops
Original post by TeeEm
real shame


There's an MS uploaded to imgur

http://imgur.com/a/OMb2o
ah great, for question 2 instead of differentiating -3xy I differentiated 3xy which is why I couldnt work out b, cos of one silly mistake I've lost 10 marks or will I get a few method marks?
Arsey my saviour! Please comence your unofficial mark scheme!
50/75 ? C?
Reply 3210
Avatar for 11234
11234
8
How many marks lost for getting 32(In2)^2 +32In2 - 12
65/75 enough for 85ish UMS? thoughts?
Original post by rachelc142
hey on Q2 shouldn't it be -8y.dy/dx for the last term rather than a +? or am I being a muppet! :-p

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No your are absolutely correct. good spot. It won't affect the answer for part B though
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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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 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??
Original post by mc1996
No your are absolutely correct. good spot. It won't affect the answer for part B though


ah OK cool! yeah, thanks :-) am trying to roughly add up my marks so wanted to check haha

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Original post by nbofni
Arsey my saviour! Please comence your unofficial mark scheme!


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
Reply 3218
Avatar for C++
C++
7
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.
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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