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# Edexcel A2 C4 Mathematics June 2015 - Official Thread Watch

1. (Original post by clara16)
This probably a really easy qu for most people but, can anyone explain why the purple graph here is correct and not the black graph for the sketch of the parametric curve: x = t^3 y = t^2 ?

Thanks Attachment 379927

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I'm guessing you got y=x^(2/3) for the Cartesian? Consider what happens to the gradient as x gets larger.

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2. (Original post by Krollo)
I'm guessing you got y=x^(2/3) for the Cartesian? Consider what happens to the gradient as x gets larger.

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Ahh I see of course. Thanks

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3. I've just started my revision...and was wonderjng which years the c4 paper was harder?

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4. (Original post by Datta10)
I've just started my revision...and was wonderjng which years the c4 paper was harder?

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Last year's seemed hard
5. Yeah...thats the only one I found too ..I was wondering if there were any other years

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6. (Original post by cerlohee)
Last year's seemed hard
i thought it was easy compared to the older papers.
7. (Original post by Paras Agarwal)
i thought it was easy compared to the older papers.
Haha I remember being traumatised by the year 13s that left that exam in tears at my school
8. (Original post by cerlohee)
Haha I remember being traumatised by the year 13s that left that exam in tears at my school
Lol weirdly my school is pretty bad, but the further maths class that took it last year around 7 of them got 100 in C3 and C4 2014. They were the best class my school ever had!

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9. (Original post by physicsmaths)
Lol weirdly my school is pretty bad, but the further maths class that took it last year around 7 of them got 100 in C3 and C4 2014. They were the best class my school ever had!

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Oh my god :O thats amazing haha did they all go off to do maths??
10. (Original post by cerlohee)
Oh my god :O thats amazing haha did they all go off to do maths??
Maths at imperial and cambridge and warwick,engineering at cambridge and a couple other engineers.

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11. For the c4 2014 cone question (7b) what's the key to working this out? I'm trying to do it now and I don't know where to start haha

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12. (Original post by lam12)
For the c4 2014 cone question (7b) what's the key to working this out? I'm trying to do it now and I don't know where to start haha

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Divide it into a volume of revolution minus a cone, and then use parametric integration. It's a fairly faffy question, let me know if you need help

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13. The cone question was brutal. I stopped working for about 2 minutes and was pondering life.
14. (Original post by Krollo)
Divide it into a volume of revolution minus a cone, and then use parametric integration. It's a fairly faffy question, let me know if you need help

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Ypu sitting c3/4 this year aswell?

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15. (Original post by physicsmaths)
Ypu sitting c3/4 this year aswell?

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Yeah, all the cores, S1, M1/2. Are you sitting FM?

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16. (Original post by Krollo)
Yeah, all the cores, S1, M1/2. Are you sitting FM?

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Half yes. My school does AS FM AS maths in yr 12. So im doing C3-4 Fp2-3 M3-4 S2. 7 modules doing one extra just to secure the A* but it is good cause i only need 85 in two A2 further maths modules for an A* since i got 100 in M2.
I would aim to smash M2 if I was you then you can chill in A2 with Maths and Further maths(what I am doing lol still gotta learn M4!)

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17. (Original post by physicsmaths)
Half yes. My school does AS FM AS maths in yr 12. So im doing C3-4 Fp2-3 M3-4 S2. 7 modules doing one extra just to secure the A* but it is good cause i only need 85 in two A2 further maths modules for an A* since i got 100 in M2.
I would aim to smash M2 if I was you then you can chill in A2 with Maths and Further maths(what I am doing lol still gotta learn M4!)

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If we're talking about edexcel here, you do realise is doesn't matter what you got in your other units..

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18. (Original post by frozo123)
If we're talking about edexcel here, you do realise is doesn't matter what you got in your other units, you still need an average of 90 for an A* in C3 and C4 (+480 overall ums)

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19. (Original post by frozo123)
If we're talking about edexcel here, you do realise is doesn't matter what you got in your other units..

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Why doesnt it? M2 is an A2 module and will go into A2 further maths. So it will count towards my A* since I got 100 in it.

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20. (Original post by frozo123)
If we're talking about edexcel here, you do realise is doesn't matter what you got in your other units..

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I am talking about the Further Maths A*. Not normal maths.

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