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# Edexcel AS Mathematics C2- 25th May 2016 Thread watch

1. (Original post by mali473)
How would I answer part b

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centre of circle is (5,4) and the radius is sqrt20 which is between 4 and 5. So the circle will cross the x-axis but not the y-axis
2. (Original post by candol)
centre of circle is (5,4) and the radius is sqrt20 which is between 4 and 5. So the circle will cross the x-axis but not the y-axis
Why not the y?

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3. (Original post by mali473)
Why not the y?

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because the radius is less than 5, and the centre is (5,4) the circle won't extend as far as the y-axis. Think about the sketch of the circle if that helps
4. (Original post by pondsteps)
anyone has the C2 2015 Jan paper and ms pdf file?????
I can't find it online someone pls send it
There's only the Jan 2015 IAL papers I think

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5. Anyone has June 2015 mark scheme??
6. www.physicsandmathstutor.com

(Original post by Jules12345)
Anyone has June 2015 mark scheme??
7. (Original post by pondsteps)
anyone has the C2 2015 Jan paper and ms pdf file?????
I can't find it online someone pls send it
You must be talking about the IAL paper which is C12 (a combination of Core 1 and 2) as C2 hasn't been sat in January for a while (2013).

Here's a link to the paper I mean:
https://c4a3f001dcd45afe69d0ceec8300...%20Edexcel.pdf

And the mark scheme:
https://c4a3f001dcd45afe69d0ceec8300...%20Edexcel.pdf

It'll be of limited use though as you'll have to sift through and select the C2 questions, probably more hassle than reward
8. Can someone explain to me why when doing a sin graph e.g y= sin(2x-30) you would first do f(2x)=sin(2x) then g(x)= sin(2x) so g(x)= sin[2(x-15)] rather than just doing 1/2 the points then adding 15?
9. (Original post by Euclidean)
You must be talking about the IAL paper which is C12 (a combination of Core 1 and 2) as C2 hasn't been sat in January for a while (2013).

Here's a link to the paper I mean:
https://c4a3f001dcd45afe69d0ceec8300...%20Edexcel.pdf

And the mark scheme:
https://c4a3f001dcd45afe69d0ceec8300...%20Edexcel.pdf

It'll be of limited use though as you'll have to sift through and select the C2 questions, probably more hassle than reward
Actually not true, the C2 exam requires you to know all the things in C1 so you could be examined on a mixture and by he way things are going so far I don't see why not
10. Yeah it's not on there
11. Seems like people might be running out of things to do in C2.

Here's a problem:

Prove that the area of a triangle of lengths a, b, c and adjacent angles A, B and C is given by

Hence by considering the area of a triangle of lengths a, b, c and adjacent angles A, B and C prove the Law of Sines
12. What do you reckon might come up this year? By looking at last year's paper...

A) Binomial series - I predict that the estimation of a value might come up this year, as it is not always tested.
B) Coordinate geometry - I think they are going to put a ridiculous question on that. What always comes up is ''equation of a circle'' and ''tangents''
C) Integration - I believe that the trapezium rule may come up this year, as it didn't come up last year. As always, a question that contains a lot of marks will be tested on differentiation and integration.
D) Sequences and series - Any worded questions? In C1 there was a worded question so it may come up this year as well?
E) Radians - I am expecting a hard question on this! And trig ratios is another topic that will probably contain a lot of marks in the exam.
13. Guys when I looked through I think I got a high B very close to an A... what marks do I need to get to get an overall A for Statistics and C2?
14. (Original post by kk5)
Guys when I looked through I think I got a high B very close to an A... what marks do I need to get to get an overall A for Statistics and C2?
I assume you mean you got a high B in C1

In which case, assume you got 78 UMS

You'd need 240 overall which means you'd need 81 average in C2 and S1 for an overall A
15. What will 51 marks get me in the C1 paper do you guys reckon? 63 UMS marks, or 68-70?
16. (Original post by oni176)
What will 51 marks get me in the C1 paper do you guys reckon? 63 UMS marks, or 68-70?
for 2005-2013: The lowest mark for a B was 47

If what everyone is saying about difficulty is true (I doubt it) I suspect 51 marks will net you around 68-70 UMS
17. (Original post by Euclidean)
for 2005-2013: The lowest mark for a B was 47

If what everyone is saying about difficulty is true (I doubt it) I suspect 51 marks will net you around 68-70 UMS

What will the worst case scenario be then? I was thinking about 63 UMS marks..
18. (Original post by oni176)
What will the worst case scenario be then? I was thinking about 63 UMS marks..
You're probably in the right ballpark tbh
19. (Original post by Euclidean)
You're probably in the right ballpark tbh
Hope I'll get 70 UMS marks, that will make my life so much easier.. Thank you for your help.
20. (Original post by oni176)
Hope I'll get 70 UMS marks, that will make my life so much easier.. Thank you for your help.
Fancy having a go at my question?

Either everyone has chickened out or they haven't seen it yet

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