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# Edexcel A2 C4 Mathematics June 2015 - Official Thread Watch

1. (Original post by Nurishment)
ples can sum1 tech me hoew 2 not mek mistakz in axem?

we must have GCSE english knowledge first
2. Is there any proofs we have to know like the a^x thing?
3. (Original post by Nurishment)
ples can sum1 tech me hoew 2 not mek mistakz in axem?
yes; oeidew ijoiwpqkdxjn vuwp 4ekfo werkkfd qwsdjoi meisjfh jklsuw psdjkeldam

get it?
4. All the best to everyone! I am a maths tutor. If anyone is really struggling and needs any LAST MINUTE help don't hesitate to get in contact.
5. Exam is in the afternoon right? ;o
6. do we need to know any of the volume formulas for cones etc or will we be given them in the exam?
7. (Original post by Pmce1997)
X=0.1 so you get root of 7.1. Then just multiply the answer by 10 as the cubed root of 1000 is 10
Of all the things in the syllabus, I actually think that question is the most baffling. Most questions if I do wrong I usually go "ahhh I get it" after like 10 minutes of attempting and exam solutions. This question just doesn't even sit with me.
8. (Original post by ima fail)
Exam is in the afternoon right? ;o
Nah it started 9 minutes ago.
9. (Original post by ima fail)
Exam is in the afternoon right? ;o
na its at night 9pm .. they changed it up
10. Any tips on finding out a vector of something like AB?

say, you got AB on L1, how do you find the vector for it? is is b-a or a-b? I always get confused and end up having minus the angle that I find by 180..
11. (Original post by broconomist)
do we need to know any of the volume formulas for cones etc or will we be given them in the exam?
Its been said before but basically it will be given, sometimes they use synoptic AS, even GCSE links but there usually for 2/3 markers
if its a 6/7 marker they would give you the additional information
12. for what shapes do we need t know how to work out volume, area etc.??
13. Does anyone have a list of notes on vectors.
14. (Original post by Bustamove)
Any tips on finding out a vector of something like AB?

say, you got AB on L1, how do you find the vector for it? is is b-a or a-b? I always get confused and end up having minus the angle that I find by 180..
15. (Original post by Bustamove)
Any tips on finding out a vector of something like AB?

say, you got AB on L1, how do you find the vector for it? is is b-a or a-b? I always get confused and end up having minus the angle that I find by 180..
Remember that AB gets you from A to B. a + (b - a) = b Hence AB is the vector (b -a)
16. (Original post by chocolatemonkey7)
thanks
17. http://www.examsolutions.net/a-level...8&solution=8.2 I don't really understand what he's doing here, could you please explain?
18. If it asks me to differentiate something like 1/((x+2)^2)

Can I use substitution (u=x+2) or would that not get any marks because it's not in the mark scheme

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19. (Original post by GeorgeFrainza)
Is that what you would recommend and then do the exam externally ?
sure
20. (Original post by 13 1 20 8 42)
Remember that AB gets you from A to B. a + (b - a) = b Hence AB is the vector (b -a)
I see.. thanks I always get confused with the direction of my vector, which leads me to having to minus my angle by 180...

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