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C2 Maths AS aqa 2016 (unofficial mark scheme new) watch

1. I'm pretty sure the binomial expansion question was

(1+2x)^5

not (2+x)^5 ?
2. (Original post by lausamuel)
I'm pretty sure the binomial expansion question was

(1+2x)^5

not (2+x)^5 ?
Correct:
(1+2x)^5 * (2+x)^7
3. (Original post by JustARandomer123)
For the question about finding the perimeter, I got the radius of the sector to be 5.8. Most people who attempted the question at my sixth form did too. I'm not sure which is right xD
I think the radius was like 5.83 or something.
4. The last one is -5/2, (4X^2 + 20x +25) = (2x+5)^2
The last one is -5/2, (4X^2 + 20x +25) = (2x+5)^2
It was 4x^2 - 20x + 25 = 0
6. How many marks do I lose for not finding u12 but just finding a and d in the series question?
7. (Original post by Bosssman)
It was 4x^2 - 20x + 25 = 0
mmm im not sure
8. (Original post by SM-)
How many marks do I lose for not finding u12 but just finding a and d in the series question?
Most likely two marks for finding a and d, and lost one mark for not finding u12
mmm im not sure
Absolutely agree with Bosssman it was indeed:

4x^2 – 20x + 25 =0

Formed from

4x^2 + 36x + 45 = 56x + 20

(Then rearranged to get the above)
10. (Original post by CirclesAreRound)
Absolutely agree with Bosssman it was indeed:

4x^2 – 20x + 25 =0

Formed from

4x^2 + 36x + 45 = 56x + 20

(Then rearranged to get the above)
Can you remember the original log equation?
Can you remember the original log equation?

log4(2x+3) + log4(2x+15) = 1 + log4(14+5)
12. Note when I say log4 I mean log base 4 (But can't use subscripts as I'm on my phone)
13. (Original post by CirclesAreRound)
log4(2x+3) + log4(2x+15) = 1 + log4(14+5)
Ah yeah slipped up, any idea how many marks id lose? Just forgot the minus, I think on a harsh paper it would be 2, but im not sure, what do you think an A is, I think i got around 65
14. what do you think 90 ums will be ???
15. (Original post by jake4198)

A - 61
B - 56
C - 51

Was easier than last year but not the easiest paper there's been.
what will be 90 ums???
16. (Original post by Amir123459876)
what do you think 90 ums will be ???
67ish I think
Ah yeah slipped up, any idea how many marks id lose? Just forgot the minus, I think on a harsh paper it would be 2, but im not sure, what do you think an A is, I think i got around 65
At most you'd lose the A1 mark (Anymore would be ridiculous and harsh) but kudos on taking on a relatively formidable question for C2.

Your projected mark of 65 should be comfortably beyond an A so congratulations!
18. what was the first question the actual numbes
19. (Original post by Amir123459876)
what will be 90 ums???
People generally found the paper quite difficult judging from the poll, so 90UMS is likely to be about 65.

My personal predicted boundaries:

Full UMS - 72
A - 56
B - 48
C - 41
D - 33
E - 26
20. (Original post by CirclesAreRound)
At most you'd lose the A1 mark (Anymore would be ridiculous and harsh) but kudos on taking on a relatively formidable question for C2.

Your projected mark of 65 should be comfortably beyond an A so congratulations!
What do you mean mate?, thank you very much appreciate it

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