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# Edexcel C3 June 2016 - Unofficial Mark Scheme Watch

1. I INTEGRATED INSTEAD OF DIFFERENTIATED OMFG.
4/(x-2) does not differentiate to 4In(x-2) lmao goodbye
2. (Original post by Mhyykol)
was expecting a much harder paper ngl. i flopped last year and ended up with a C in AS. this paper was decent tho, i think about 73 out of 75 with this unofficial markscheme but im not sure 7b. in the mark scheme is how i wrote it in the exam but some say that it is not simiple enough and combining it all into one fraction was the correct way
as long as you prove 2cot2x + tanx = cotx

then youl be awarded full marks

Thats assuming you used identites you learn in C3/C4 and not other orthodox identities.
3. (Original post by unimaginable118)
Does anyone remember how many marks the last question was? I was SO STUPID. I left it out (( looks like someones not going to uni...
same man
4. (Original post by leestitt)
as long as you prove 2cot2x + tanx = cotx

then youl be awarded full marks

Thats assuming you used identites you learn in C3/C4 and not other orthodox identities.
i meant part B to the question that asked us to draw a arcsin graph
5. (Original post by Mhyykol)
i meant part B to the question that asked us to draw a arcsin graph
oh sorry , no your way is fine for that
6. (Original post by veldt127)
I've done model answers for all of it, but I've skipped working in places and I'm still not 100% sure of my answers; it'd be nice to see someone else's answers which will be more accurate and fitting to the mark scheme
where?
7. (Original post by leestitt)
oh sorry , no your way is fine for that
sweet thanks for that boost in confidence, this c3 paper gives me a lot of room for c4
8. if you got the answers for long division wrong for part (a) will you get zero marks for part two even if your method for finding normal was correct
9. (Original post by Mhyykol)
sweet thanks for that boost in confidence, this c3 paper gives me a lot of room for c4
haha its given me the complete opposite
10. (Original post by kprime2)
where?
http://www.thestudentroom.co.uk/atta...7&d=1466526735

and 3c: http://www.thestudentroom.co.uk/atta...1&d=1466527243
11. (Original post by leestitt)
haha its given me the complete opposite
do you do solomon papers, for me they helped soo much. they are hard and they can be dishearting but they get you thinking in a problem solving way. when i looked at the cot question i knew straight away it had to be double angle. and did anyone else notice that the last question was in the june 2007 paper
12. Made a history 100-90-80 UMS boundaries for C4, D2 and S2 - would have done more but data entry like this is really tiresome

Good luck to those with exams still to come
Attached Images

13. (Original post by kish98)
if you got the answers for long division wrong for part (a) will you get zero marks for part two even if your method for finding normal was correct
Definitely not. The question was out of five, so there'll be at least three method marks and if you're lucky accuracy marks might be follow through. Assuming your method for part (b) was perfect, you're looking at 3-5/5.
14. (Original post by ShatnersBassoon)
Definitely not. The question was out of five, so there'll be at least three method marks and if you're lucky accuracy marks might be follow through. Assuming your method for part (b) was perfect, you're looking at 3-5/5.
Cheers for the reply, it has helped my depression a lot aha . completely forgot how to do the long division. oh well
15. What are the likely grade boundaries? I messed up bad and think I got around 45/75
16. (Original post by Mhyykol)
do you do solomon papers, for me they helped soo much. they are hard and they can be dishearting but they get you thinking in a problem solving way. when i looked at the cot question i knew straight away it had to be double angle. and did anyone else notice that the last question was in the june 2007 paper
Yeah i do solomon papers, and yes when i saw the drug question i knew it had come up before, because my xmas mock set by my teacher was the June 2007 question
17. (Original post by Student7th)
How accurately did people predict june 2013's grade boundaries?
if you're expecting it to go that low, don't
18. (Original post by Student7th)
How accurately did people predict june 2013's grade boundaries?
Quite accurately, but these boundaries won't be anywhere near those. The worst they'll get I think are:

A* = 67/75
A = 60/75
B = 52/75

Its more likely that they will be lower by 1 or 2 marks than what I have predicted, but I highly doubt it will exceed that.
19. What grade will 60/61 be?
20. (Original post by heyitskim)
What grade will 60/61 be?
if you're lucky an A

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