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Edexcel A2 C4 Mathematics June 2015 - Official Thread watch

1. am i the only one who feels that there's never enough time to finish a standard paper in the 1hour 30 mins that has been given? or am i not just fast enough?
2. (Original post by theDanIdentity)
am i the only one who feels that there's never enough time to finish a standard paper in the 1hour 30 mins that has been given? or am i not just fast enough?
yup I don't understand why AS and A2 timings are the same for maths?
3. (Original post by games211)
yup I don't understand why AS and A2 timings are the same for maths?
For real, I can do c1 and c2 with quite some time to spare but certainly not c4
4. guys do u know how to handle
integral of : sin3xcosx ??
5. (Original post by devendragrg)
guys do u know how to handle
integral of : sin3xcosx ??
Sin4x = sin(3x + x)
Sin2x = sin(3x - x)

Try using those
6. (Original post by theDanIdentity)
am i the only one who feels that there's never enough time to finish a standard paper in the 1hour 30 mins that has been given? or am i not just fast enough?
You are probably just slower then others(not always a bad thing), most people I know finish in time. I think the timing is is smaller then at AS but from AS to A2 on average you shoukd be working quicker i guess!

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7. (Original post by devendragrg)
guys do u know how to handle
integral of : sin3xcosx ??
What paper?
8. (Original post by games211)
I got that but I still am not getting the correct answer :9
I have no idea what the problem is
9. (Original post by devendragrg)
guys do u know how to handle
integral of : sin3xcosx ??
Possibly factor formulae from C3.
10. Do you think they might ask volume of revolution around the y-axis? I can't remember them ever asking that?
11. (Original post by TheAnnabelle)
Do you think they might ask volume of revolution around the y-axis? I can't remember them ever asking that?
Nope, it's not in the spec
12. (Original post by Gome44)
Nope, it's not in the spec
Came up in an Edexcel Specimen Paper
13. (Original post by arjunlotay)
Came up in an Edexcel Specimen Paper
How would you do it then just in case? Integrate πx2 in terms of y instead?
14. (Original post by grn)
How would you do it then just in case? Integrate πx2 in terms of y instead?
Limits of y with respect to dy x^2

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15. Anyone have any tips for C4, for example how Cos X = Sin(90-x)
Or if a line is parallel to y then then denominator of dy/dx is 0
16. (Original post by arjunlotay)
Came up in an Edexcel Specimen Paper
Was probably an old spec paper
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17. Could someone please explain to me part b of this expansion question from June 2013 R it's a simple element but I really don't understand it! Thanks
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18. Last-minute advice to anyone taking C4:
CHECK THE NUMBER OF QUESTIONS BEFORE YOU BEGIN.
19. (Original post by TeeEm)
for x=2
sec() = 2
cos() = 1/2
() = pi/3

for x=3
sec() = 3
cos() = 1/3
TeeEm can you link me to some of your questions involving volumes of revolution questions where you have a line and a curve and you use the formula of a cone. I don't know if I am making any sense thanks

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20. are the edexcel gold silver bronze papers any good? the gold ones in particular?

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