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AQA A2 Mathematics Pure Core 4 MPC4 - 17th June 2016

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1. you can separate the fractions and differentiate as normal
(Original post by douglaswill)
got that too. took me two pages
2. (Original post by bencurnow)
1) A = -5/2, B = 9/2
-1 + 7x - (22/3)x2
-1/2 < x < 1/2

2) x = 99.6, 206.4

3) p = 2/15
r = 1/3, s = 4/15

4) -3x + 2 + 9/(2x-3)
-69/2, 9/2

5) 330 days

6) cos = 13/35
(2, 0, -1)
C = (0, 10/3, -5/3) D = (4, -10/3, -1/3)

7) (1/2)e^4
y = e / (2sqrt(1-x))(1-ln(2sqrt(1-x)))

8) k = 6
sin3y - 3ycos3y - pi = (1/6)tan^(-1)(3x/2)

Hi, do you remember the equation for question one (e.g the fraction that had to be split) OR the two separate fractions that then had to be used for the binomial please? I just want to have a go at it again! Thank you!
3. (Original post by sally.7)
Hi, do you remember the equation for question one (e.g the fraction that had to be split) OR the two separate fractions that then had to be used for the binomial please? I just want to have a go at it again! Thank you!
(19x-3)/(1+2x)(3-4x)
4. q.4 part a was 4 marks, hope that helps
5. (Original post by tanyapotter)
they'll be low but that low?

The June 2011 paper which wasn't as hard as today's paper, was 51 for an A in C4.
6. Anyone remember the question 3 with the sin = 1/root5 thing, what was the wuestion and what angles were we given?
7. (Original post by FluorescentM)
The June 2011 paper which wasn't as hard as today's paper, was 51 for an A in C4.
yeah but thats like 5 years ago... things have changed
8. (Original post by bencurnow)
1)

C = (0, 10/3, -5/3) D = (4, -10/3, -1/3)
omg i got C but i scribbled it out LOL...
9. (Original post by omarharoun3)
none, i did that too, i stated that costheta is 13/35 and then found theta
Yep, on the mark scheme there will be a line with costheta=..... and ISW (ignore subsequent working) next to it. So if they see costheta=... they give you the marks.
10. How many marks would be lost if you got lambda=1 and mu=-1/2? I'm thinking my simultaneous equations are probably slightly wrong becuse I missed a sign somewhere. Luckily I subbed in my lambda for the point of intersection though
11. (Original post by Salty carpet)
How many marks would be lost if you got lambda=1 and mu=-1/2? I'm thinking my simultaneous equations are probably slightly wrong becuse I missed a sign somewhere. Luckily I subbed in my lambda for the point of intersection though
Pretty sure I got the same values as you and I can't see where we would've gone wrong, as I went over this again and again and my equations all worked out with these values
12. (Original post by omarharoun3)
yeah but thats like 5 years ago... things have changed
Just trying to have hope..
13. (Original post by omarharoun3)
yeah but thats like 5 years ago... things have changed
June 2014 was 59 for an A* and I believe this paper was more challenging.
14. wasn't it 99.6 degrees and 206.4 degrees to find cos x ??
15. (Original post by FluorescentM)
Just trying to have hope..
sorry, didnt meant to sound rude
16. What was question 3 i cant remmeber it
17. anyone got an unofficial mark scheme for it
18. (Original post by steph-carys)
Pretty sure I got the same values as you and I can't see where we would've gone wrong, as I went over this again and again and my equations all worked out with these values
Wait I got that too. Are people saying its wrong?
19. (Original post by BioStudentx)
Wait I got that too. Are people saying its wrong?
It looked like some people got other values for lambda :/ unless I'm getting confused with questions haha

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Updated: August 17, 2016
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