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# C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST Tweet

Maths exam discussion - share revision tips in preparation for GCSE, A Level and other maths exams and discuss how they went afterwards.

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1. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
for question 3 how many marks would you get if you got up to tan3X= ...whatever the answer was
2. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
ah so relieved thinking I got about 70/75
3. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
(Original post by Arsey)
This thread will be locked at somepoint and then unlocked at midnight following the Core 3 examination. I will upload the paper and my solutions to this post. I will do my best to answer questions about the paper but please try to read the thread first so that I am not answering the same questions lots of times.Here are some links to previous D1 threads, they are worth a read and you will see what the common errors were...C3 Jan 2012 - http://www.thestudentroom.co.uk/show....php?t=1903204C3 June 2011 - http://www.thestudentroom.co.uk/show....php?t=1619039The second link has loads of past papers, mark schemes, model solutions etcGood luck.
4. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
(Original post by Ahmed_Mans)
I forgot to simplify in 7(b), I left is as 9/6(x^2)+54
Will I lost any marks for it?
Question does not ask for it in its simplest form. You will not lose any marks, I did the same thing.
5. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
(Original post by Benjyxo)
OMG, didnt see the x >0 for 3! but -pi/9!! still should be 100 ums :3
I realised that but I was like da*** its negative... HOW!!!?????
6. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
Cheers Arsey! Messed Q1 up - silly addition but just been through, and I think I have 66/75 give or take I need a B for uni so hopefully C4 won't be too bad and I will get my B

Well done/good luck/better luck next time everyone! (please circle appropriate answer :P)
7. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
I thought it was quite hard- not enough time to check answers/write down what I got :P
Feeling slightly more confident that I haven't completely failed after looking at the markschem- maybe around 60/75 if I didn't make any additional stupid mistakes..?
8. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
Can't believe I think I managed to misread iteration question as x0 = 0 rather than x0 = 1

Stupid loss of an easy 3 marks.
9. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
I count 48/75 , really upset past papers was getting around 67 , can anyone guess what 48 would be ??? Please say a C haha
10. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
For 6e) where you had to draw the exponential curves on the graph I didn't draw on the asymptotes because it didn't ask for them. Do you think I will lose marks for this?

And on 7b) is Arsey saying there is two answers? because I left mine like (1/6)cos^2(arctan(x/3)). Is that ok as a final answer?

Other than those things I'm a bit unsure about I reckon it all went pretty well A* here we come!
11. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
(Original post by Arsey)
This thread will be locked at somepoint and then unlocked at midnight following the Core 3 examination. I will upload the paper and my solutions to this post. I will do my best to answer questions about the paper but please try to read the thread first so that I am not answering the same questions lots of times.Here are some links to previous D1 threads, they are worth a read and you will see what the common errors were...C3 Jan 2012 - http://www.thestudentroom.co.uk/show....php?t=1903204C3 June 2011 - http://www.thestudentroom.co.uk/show....php?t=1619039The second link has loads of past papers, mark schemes, model solutions etcGood luck.
Thank you so much Really appreciate it. What were your opinions on the paper?
12. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
(Original post by amoo94)
i thought it was hideous, i definitely wont have done better than in january! i'm hoping the mark scheme will make me feel a little bit better!
If you get a lower mark in your resit, which mark counts?
13. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
(Original post by Arsey)
This thread will be locked at somepoint and then unlocked at midnight following the Core 3 examination. I will upload the paper and my solutions to this post. I will do my best to answer questions about the paper but please try to read the thread first so that I am not answering the same questions lots of times.Here are some links to previous D1 threads, they are worth a read and you will see what the common errors were...C3 Jan 2012 - http://www.thestudentroom.co.uk/show....php?t=1903204C3 June 2011 - http://www.thestudentroom.co.uk/show....php?t=1619039The second link has loads of past papers, mark schemes, model solutions etcGood luck.
Thank you SO much for always doing these Arsey - you're the best!
What do you think the boundaries will be like?
14. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
(Original post by Arsey)
This thread will be locked at somepoint and then unlocked at midnight following the Core 3 examination. I will upload the paper and my solutions to this post. I will do my best to answer questions about the paper but please try to read the thread first so that I am not answering the same questions lots of times.Here are some links to previous D1 threads, they are worth a read and you will see what the common errors were...C3 Jan 2012 - http://www.thestudentroom.co.uk/show....php?t=1903204C3 June 2011 - http://www.thestudentroom.co.uk/show....php?t=1619039The second link has loads of past papers, mark schemes, model solutions etcGood luck.
Cheers Arsey. How many marks do you think I would lose for not solving 3a) properly? I did it right up to root(3)sin3x + 3cos3x = 0 but I couldn't figure out how to solve so I just stuck in random pi values until I got the right answer and wrote that down.
15. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
How many marks would I get for..

3a) only did the differentiation, couldn't find turning points
3b) My gradient was wrong but x and y values were right
7b) Only reached up to 1/6sec^2(2y)

Would appreciate it if someone could tell me, thanks
16. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
lost majority of the mark on 7b whyyyyyyyyyy
17. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
stay awake till now just to see this haha
18. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
For the differentiation questions i didnt put answers in their simplest form
For both i and ii, how many marks will i lose for that?
19. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
On question 6E would I lose marks for not adding in asymptotes/line of symmetry?
20. Re: C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST
(Original post by knowledgecorruptz)
Question does not ask for it in its simplest form. You will not lose any marks, I did the same thing.
Great, thanks!
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