Edexcel C1, C2 June 2013

I don't blame you, learning the basics is the hardest thing in any subject, but once you actually get down to using the basics you learnt to more interesting concepts, then that's when it gets enjoyable. Still you need to put in just as much effort (if any case, more)

To be honest, AS is hard, I'm not even gonna lie. I worked hard and got an A overall. When it came to A2, I actually found the content more interesting and once you get down to applying the basics from AS into A2, thing's get easier (still some hard concepts like the trig identities, vectors in c4 etc)........

The reason I didn't do so well at the end of A2 was because I had resits also to focus on, so was pretty limited on time for each subject. Got a high B overall for maths, so it's down to C2 and C3 to get my 2 ums. Whichever module I get the 2 ums in, I'll have my A....



Geometric series is a load of nonsense.

Differentitation makes up quite an important part of maths

I don't blame you, learning the basics is the hardest thing in any subject, but once you actually get down to using the basics you learnt to more interesting concepts, then that's when it gets enjoyable. Still you need to put in just as much effort (if any case, more)

To be honest, AS is hard, I'm not even gonna lie. I worked hard and got an A overall. When it came to A2, I actually found the content more interesting and once you get down to applying the basics from AS into A2, thing's get easier (still some hard concepts like the trig identities, vectors in c4 etc)........

The reason I didn't do so well at the end of A2 was because I had resits also to focus on, so was pretty limited on time for each subject. Got a high B overall for maths, so it's down to C2 and C3 to get my 2 ums. Whichever module I get the 2 ums in, I'll have my A....



Geometric series is a load of nonsense.

Differentitation makes up quite an important part of maths

Yeah exactly, I find the AS level interesting and rewarding than GCSE, I like putting in effort and being given back as opposed to GCSE.

Yeah as I'm looking to do STEP and then maths at university, I often oversee parts of C3,C4, FP2, FP3 and it all looks so interesting, my favourite parts being the wide variety of differentaition/integration on offer, love these topics (apart from optimisation, hence C2 differentiation- > by this I mean proving formulas by cancelling a variable from something like a cylinder) That is why I hate C2 differentiation, minimums and maximums are piss easy.

Aha that's interesting, 2ums should be fine for you to get, and good luck with reaching your offer, I think I recall from the alevel results posting thread that you only applied to one uni/got an offer for one ? :P.

Agreed, differentiation and integration though are lovely

The B you achieved is great! You'll defo do good in C2, C3 with your knowledge increase. It's like how I did better in my C1 resit!

Yeah, I applied to Herts for Pharmacy but withdrew them straight away when I got my offer from Reading...

Cheers yeah, just hoping that C2 is a nice paper and maths will be out of the way.

Good luck with your exams and STEP for next year. You got any unis in mind you wish to apply to?

I just did all the C1 soloman papers. 50 minutes per paper whilst marking. Now 12 M1 papers left.

One question: Why is the surface area of a sphere given in the formula booklet?

I just did all the C1 soloman papers. 50 minutes per paper whilst marking. Now 12 M1 papers left.

One question: Why is the surface area of a sphere given in the formula booklet?

I just did all the C1 soloman papers. 50 minutes per paper whilst marking. Now 12 M1 papers left.

One question: Why is the surface area of a sphere given in the formula booklet?

Argh I try and do Solomon papers and always do rubbish because I can't do the questions, they're too hard. But when I do edexcel papers I do really good getting 65+... If I can't do Solomon papers does that mean I may struggle a little in the real exam on Monday?


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I just did all the C1 soloman papers. 50 minutes per paper whilst marking. Now 12 M1 papers left.

One question: Why is the surface area of a sphere given in the formula booklet?

Here are the ones i think we need to know




C1 Quadratic Equation Proof:
$ax^{2} + bx + c = 0$
complete the square
$ax^{2} + bx = -c$
$x^{2} + \frac{b}{a}x = \frac{-c}{a}$
$(x+ \frac{b}{2a})^{2} - \frac{b^{2}}{4a^{2}} = \frac{-c}{a}$
$(x+ \frac{b}{2a})^{2} *= \frac{b^{2}}{4a^{2}} - \frac{c}{a}$*
$(x+ \frac{b}{2a})^{2} *= \frac{b^{2}-4ac}{4a^{2}}$
$(x+ \frac{b}{2a}) *= \sqrt{\frac{b^{2}-4ac}{4a^{2}}}$
$(x+ \frac{b}{2a}) *= \frac{\sqrt{b^{2}-4ac}}{2a}$
$x = \frac{\sqrt{b^{2}-4ac}}{2a} - \frac{b}{2a}$
$x = \frac{-b \pm\sqrt{b^{2}-4ac}}{2a}$



C1 Sum of Arithmetic Series:


$S_{n} = a + (a+d) + (a+2d) + ... + (a+(n-2)d) + (a+(n-1)d)$
reverse*
$S_{n} = *(a+(n-1)d) + (a+(n-2)d) + ... + (a+2d) + (a+d) + a$
add both
$2S_{n} = 2a + (n-1)d + 2a + (n-1)d + 2a + (n-1)d + ... + 2a + (n-1)d$
$2S_{n} = n[2a + (n-1)d]$
$S_{n} = \frac{n}{2}[2a + (n-1)d]$

C2 Sum of Geometric Series:

$S_{n} = a + ar + ar^{2} + ar^{3} + ... + ar^{n-2} + ar^{n-1}$*
$rS_{n} = ar + ar^{2} + ar^{3} + ar^{4} + ... + ar^{n-1} + ar^{n}$
$S_{n} - rS_{n} = a - ar^{n}$
$S_{n}(1 - r) = a(1 - r^{n})$
$S_{n} = \frac{a(1 - r^{n})}{(1 - r)}$

Any more?

I don't think we have to be able to prove the quadratic formula, do we?

im actually so stressed for the c1 exam, does anyone have any ideas of what sorts of things may pop up? the january paper was so hard compared to the other ones

I don't think we have to be able to prove the quadratic formula, do we?

For C2, what proofs do we have to learn again?

All I can remember from last year is that we gotta learn the proof for the sum of a geometric series....

I can't quite remember if there's another proof!