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# Edexcel A2 C4 Mathematics June 2015 - Official Thread Watch

1. When you haven't done C4 in over a month and you have to relearn everything over a weekend 👌

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2. (Original post by TH3-FL45H)
When you haven't done C4 in over a month and you have to relearn everything over a weekend 👌

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This is me too!

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3. (Original post by karishmachabria)
Hey, I have a question, If the question is asking for rates, its it always something divided by dt? For example dV/dt
Unless it's stated in the question that, for example time is s, then you could use dV/dt for time yes
4. Anyone know some of the hardest C4 papers out there?
5. (Original post by sj97)
Anyone know some of the hardest C4 papers out there?
Solomon L perhaps? I haven't done it yet though
6. (Original post by arsenalfc97)
What do you people do when you get stuck in an exam? As today i ended up just panicking and skipping the questions and only got around 50/75 even though in every past paper at home had been getting 70 +. For some reason as soon as i get stuck i just worry and do stupid things. How long do you spend on questions when you're stuck before moving on? As i think i tend to give up too quickly. Obviously the a star is gone which i needed for my university offer but hopefully i can salvage an a.
I have the same problem! When I got to question 8a it stressed me out as I couldn't prove what it wanted me to.. so I rushed through question 9 to have time at the end to go back to 8 and used the product rule by mistake instead of the quotient! So just by being stressed and rushing I lost the last 5 marks on that question! On top of that when I went back at the end, I still couldn't do 8a and the stress made me make a silly mistake on 8b!

In hindsight, I wish I had just accepted lost marks on q8 and moved onto 9 and done it properly because instead of losing 9 marks only for question 8, I've lost 9+5 marks for questions 8 and 9! Not to mention the other marks dropped in the paper

I don't know how to stop this happening in C4??
7. could you redo this module while you're at uni (feeling really s*** about expected grades)
9. (Original post by sj97)
Anyone know some of the hardest C4 papers out there?
10. In the following links there are resources for C4 EDEXCEL

BINOMIAL EXPANSIONS

IMPLICIT EQUATIONS

RELATED RATES OF CHANGE

PARAMETRIC EQUATIONS (no integration here)

INTEGRATION

PARAMETRIC INTEGRATION

VOLUME OF REVOLUTION

DIFFERENTIAL EQUATIONS

VECTORS
11. (Original post by 9899thft)
Hardest c4 paper anyone?
actual one or practice one?
12. (Original post by sj97)
Anyone know some of the hardest C4 papers out there?
Actual papers or practice papers?
13. (Original post by TeeEm)
Actual papers or practice papers?
Both! After today's paper I really need to get 100 UMS!
Attached Images
15. C4 Grade A and B boundaries only.pdf (5.1 KB, 188 views)
16. (Original post by sj97)
Both! After today's paper I really need to get 100 UMS!
see post 875 for grade boundaries for C4
then pick the hardest from there...

practice papers?
http://www.thestudentroom.co.uk/show....php?t=3361905
17. (Original post by Jimmy_M)
Unless it's stated in the question that, for example time is s, then you could use dV/dt for time yes
okay thanks!
18. How can i prepare for this exam, c3 took me by surprise even though i done most past papers

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19. (Original post by sj97)
Both! After today's paper I really need to get 100 UMS!
I think i need same, done all past papers from 2005-2014 including 13/14 reserves, done international jan14/15 and 2 solomon papers but today couldn't do todays paper at all Bye University, C4 is going to be very hard too as recently Cores have been getting harder but other modules like S1,M1 and so on have been nicer(thats what people say anyway)
20. (Original post by Meganl97)
I have the same problem! When I got to question 8a it stressed me out as I couldn't prove what it wanted me to.. so I rushed through question 9 to have time at the end to go back to 8 and used the product rule by mistake instead of the quotient! So just by being stressed and rushing I lost the last 5 marks on that question! On top of that when I went back at the end, I still couldn't do 8a and the stress made me make a silly mistake on 8b!

In hindsight, I wish I had just accepted lost marks on q8 and moved onto 9 and done it properly because instead of losing 9 marks only for question 8, I've lost 9+5 marks for questions 8 and 9! Not to mention the other marks dropped in the paper

I don't know how to stop this happening in C4??
For me, whenever i get stuck, I circle the question and move straight on and come back to it, or I circle any question I don't think I will immediately be able to do which ensures you get all the ones you can do done straight away so you deffo get those marks then come back to the ones you struggle on when you've done all the 'easy' ones
21. Could someone help me with part (c) on this question?? Parts (a) and (b) were fine, but I just can't seem to get the integration right in part (c)

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