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# Edexcel A2 C3 Mathematics 12th June 2015 watch

1. What did people get for part b of question 10 (the vectors one) ?? I got root13
2. (Original post by xKay)
Its actually increasing
did you have to say if it was a min or max ?
3. (Original post by Ripper Phoenix)
increasing! K was negative in bold!
i worked out second deriative and left it :/
1 mark?
4. (Original post by MrBowcat)
Just like the paper, the hitler video is also moderately s****.

that video is private i cant access it
5. (Original post by TheFuhrer)
its definitely decreasing
I put decreasing by mistake.
its increasing cause K is negative, so it would give you a derivative which is overall positive, the derivative=gradient, if derivative>0 then its increasing
6. (Original post by Ripper Phoenix)
increasing! K was negative in bold!
Agreed. Definitely increasing.
7. I swear there were only 8 questions??
8. (Original post by shashapop)
I forgot the asymptote too
I did the asymptote on the wrong axis. It's only one mark anyway
9. About the asymptote - http://www.wolframalpha.com/input/?i=y%3D%282e%5Ex%29-5

See the range, it should be y=-5 for f(x) and y=5 for |f(x)|
10. (Original post by Maham88)
did you have to say if it was a min or max ?
no the question asked whether it was an increasing or decreasing function and why
11. Let me just but this here, that paper was an absolute mind****

I got 86% UMS average at AS maths

and now I dont even think im going to get an A because

this paper was awful for many parts I couldnt even provide an answer so heartbreaking

all my effort I done all the past papers, I wasnt full ready because I knew they would **** us up, but this bad damn I have honestly ruined my life by not doing solomons
12. (Original post by Ripper Phoenix)
Cross multiply to get tanx=-1/3 and solve to get 2 answers common its just 4 marks
FFS why did I not see this! so straight forward. so annoyed with the exam!
13. (Original post by Maham88)
did you have to say if it was a min or max ?
Nope
14. (Original post by at55555555)
]
100% it was increasing from a negative and tending towards 0
increasing because x was positive and the denominator will always be positive too since its squared in the derivative
15. (Original post by TeeEm)
I am dying to see this trig identity ...

There you go. Die no more.
16. did any one get 4 solutions for the trig questions where 2(theta)- 26... = 77 degrees, or something? i put two solutions, how many marks lost?
17. The number of questions in the paper is always on the front page - in a column on the right hand side.

Always check this before you begin the exam!
18. (Original post by CalebS5)
I swear there were only 8 questions??
9 for regular C3. Last question involved fractions, quadratics and k.

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