# Edexcel A2 C3 Mathematics 12th June 2015Watch

This discussion is closed.
3 years ago
#2421
(Original post by moment of truth)
I put this at first, but its not correct. Cause they wanted it with respect to p so you had to use the identity tan^2x =1+sec^2x (or whatever it is)

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you have to draw a triangle with opposite length p, adjacent 1. then do pythagaros to find the hypotenuse. Then you know cos = A/H.
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3 years ago
#2422
(Original post by LukeTownsend123)
Attachment 426171This is what I got, people agree?
Everything except 9b and c i think
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3 years ago
#2423
Well 180 ums over both but more or less 2 A*s
(Original post by lilminster)
You need A*'s in both C3 and C4 to get an A* overall
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3 years ago
#2424
(Original post by BFP=big fat poo)
guys for the range question, I got that the range was between 0.3 and -0.7? Please someone agree with me
It was 0.0 i swear
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3 years ago
#2425
Goodbye uni. Seriously all of my exams having been good until Chemistry and now Maths. There needs to be a miracle and hope Edexcel has used their brains to give C4 good questions that people could actually do.
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3 years ago
#2426
(Original post by Melkor111)
How many marks was the last question? I somehow missed the whole question out. FML!
As i recall, it was 7 marks for the whole of question 9
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3 years ago
#2427
(Original post by lilminster)
You need A*'s in both C3 and C4 to get an A* overall
No, you need a 90% average across both papers. So you could get 80 in C3 and 100 in C4...
1
3 years ago
#2428
(Original post by Drakton15)
It is an asymptote, and you still needed to draw and label it.
why would you need to draw an aymptote if there isnt one. I believe that there actually isnt. lets wait and see for arsey to put up the mark scheme (not a challege btw just saying)
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3 years ago
#2429
For 8b (the range) surely there's no lower boundary because it was only a section of the graph when x>=0 so after the bit they showed us the graph would curve downwards as its a cubic
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3 years ago
#2430
(Original post by xyzmaster)
You need an average. Not 90 each.
Maths is different - it's 90 in each unfortunately with maths. (I'm predicted an A* so it's been explained to me)
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3 years ago
#2431
(Original post by emu_neutrino)
i got -4e^-4 which is around -0.7 and (1/8)e^-1 which is about 0.3 i think?
That's what I got too. Think it's best to put it in terms of e
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3 years ago
#2432
(Original post by Jemy)
He might even struggle....
Lol but he'll eventually get there. Id say apart from question 8a and the last q the rest were okay.

Guys dont hate just think logically. It was all from the syllabus. All papers require application and as far as grade boundaries are concerned if it was bad for all of us the boundaries will be low.

Chin up and kill that c4 paper 👍🏻😀

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3
3 years ago
#2433

http://strawpoll.me/4609429
0
Thread starter 3 years ago
#2434
YESS! I got one right! ITERATION FTW
1
3 years ago
#2435
(Original post by Chazley123)
I put y=0 because the rest of the function veered above y=5?
Isn't an asymptote defined as a point for which the whole graph tends towards but never reaches? y could equal 0?
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3 years ago
#2436
(Original post by _bindra)
x - 3.something
y - 13.something
3.1 and 13.9 I think.
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3 years ago
#2437
Grade predictions anyone? Think I've got 60/75 minimum.

That trig proof & 9b and 9c were a challenge!
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3 years ago
#2438
(Original post by Drakton15)
(3.1, 13.9)
i subbed the x value into each equation and got 13.9 and then 14.1 so I could averaged it at 14, do you reckon they will have a aprox range for the answers between these values?
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3 years ago
#2439
(Original post by RR97)
Maths is different - it's 90 in each unfortunately with maths. (I'm predicted an A* so it's been explained to me)
you're wrong, it's 90 average
3
3 years ago
#2440
(Original post by RedBullAsh)
The people saying that the paper was ridiculously hard just need to learn how to adapt their knowledge to the given questions, indeed it was hard but I'd say that at least 45 marks were easy enough to obtain. If you think you've performed terribly then use it as a learning experience. You have a few more days to revise for C4 (which will probably be even harder), so chin up and keep trying.
ill only keep my chin up if its in your mums pussaaaaaaaaay
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