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# Edexcel C2 20th May 2015 *Official Thread* watch

1. (Original post by 75MarksGod)
I'm excepting to get another 75 marks in C2.
tips for smashing c2?
2. http://www.examsolutions.net/maths-r.../C2/module.php go to the differentiation section teaches you how to do it.
3. (Original post by CaliSurf')
tips for smashing c2?
Pretty much the same stuff every year, go through all the past papers and make sure you can answer everything.
4. anyone got the c2 answers
5. (Original post by ME7860)
anyone got the c2 answers
What do you mean?
6. Does anyone know what formulas we need?
Especially for area of shapes. Lol.
I'm struggling with the basic questions because I know the formulas.
7. does anyone have a list of all the extra formulae we need to learn for C2 that isn't in the formulae book. for example the surface area of a cylinder or volume of a cylinder, as that often comes up and it would be nice to have a list of stuff like that to make sure i learn it. Thanks
8. also how is everyone preparing for c2?? i have done all the past papers and don't know what else to do
9. (Original post by SSD07)
does anyone have a list of all the extra formulae we need to learn for C2 that isn't in the formulae book. for example the surface area of a cylinder or volume of a cylinder, as that often comes up and it would be nice to have a list of stuff like that to make sure i learn it. Thanks

10. Dunno if there's anything missing, but I'm pretty sure it's all we need to know: http://imgur.com/D24Qb5W FYI we can use the C1 formulae which have the area stuff I believe.
11. (Original post by SSD07)
also how is everyone preparing for c2?? i have done all the past papers and don't know what else to do
Have you tried the bronze, silver and gold papers for C2? They are really helpful.
12. (Original post by tashielaura)
The cos/sin pythagorus identity should have a + and not a -
13. (Original post by Anon-)
The cos/sin pythagorus identity should have a + and not a -
Ah yes I see, sorry for the mistake!
14. (Original post by SSD07)
also how is everyone preparing for c2?? i have done all the past papers and don't know what else to do
you're good
15. (Original post by SSD07)
also how is everyone preparing for c2?? i have done all the past papers and don't know what else to do
Have you done all of the Solomon papers? Have you gone thorough the mixed exercises in the C2 book, Have you done the books review papers? Have you looked at any of the questions that you got wrong in the past papers you have done and re attempted them or looked at a video solution of how to do them?

Also regarding your comment earlier about revision formulae, all you need to do is write down the trig rules, radians rules (r x theta etc.) Look through all the different types shapes that you can get asked to find the surface area of etc..

Hope this helps
16. (Original post by rachelw785)
I am struggling with parts of C2, especially with the differentiation parts and finding the maximum and minimum points etc., can anyone tell me how they remember how to do this? I have no idea
Well you differentiate the function. Make the differential equal to 0 as a turning point has a gradient of 0, and find out your x coordinate
To find out whether it is a maximum or minimum, differentiate the differential
Sub in your x value and if it is greater than 0 it is a minimum and if it is less than 0 it's a maximum
and to find your y value, just sub in x to f(x)
If you're asking how to remember well just remember that method
And specifically for remembering when it's a max or min
If it's less than 0 it means it has to be a maximum as nothing can go over 0 vice versa
(This is for my revision btw that's why I typed out the whole method)
17. (Original post by Dinaa)
Dinaa is IN
I AM IN. Although theres another thread with exactly the same title... hm.
18. (Original post by ME7860)
Has someone got the answers for the c2 exam on 20th may
How on earth do you think this would be possible lolll.... you do realise its an exam?
19. (Original post by Anon_98)
How on earth do you think this would be possible lolll.... you do realise its an exam?
Apparently the c2 paper got leaked on twitter...
20. This one has been here for a few days now

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