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

1. (Original post by JamieG1009)
I think I got (0, 10/3, -5/3) and (4, -10/3, 1/3)
That'll be a -1/3 for that last ordinate
Averages of i, j, k should be (2, 0, -1)
2. (Original post by LucasFletcher)
Am I the only one who got 28days? Did you all recalculate k? As it differed depending on the substance
I got 28 too, i recalculated as it was ofc different
3. (Original post by rhiannon_)
That's what I meant sorry, what did you get?
13/35 or sth yeah
4. (Original post by JRKinder)
The half life is 330, I'm pretty sure.
I think i gt same as u😊
5. I find this so funny after an exam hahahah so much nervousness and excitement
6. (Original post by LucasFletcher)
Am I the only one who got 28days? Did you all recalculate k? As it differed depending on the substance
Yes, you had to calculate a new value of k.
7. (Original post by C0balt)
13/35 or sth yeah
That's what I got! Thanks
8. (Original post by ThusSpakeAlex)
I got 28 too, i recalculated as it was ofc different
But it took longer than that just to get down to 8g ?
9. does anyone remember question 7 where you found the gradient that supposedly came out to e^4/2. Was there any follow on questions from this? Wondering because I remember getting something ridiculous like 72e^4 at one point and I'm curious about method marks
10. (Original post by rhiannon_)
That's what I got! Thanks
What question is this for
11. (Original post by asdgsgh)
does anyone remember question 7 where you found the gradient that supposedly came out to e^4/2. Was there any follow on questions from this? Wondering because I remember getting something ridiculous like 72e^4 at one point and I'm curious about method marks
it was that rearranging question so you're fine, didn't have to use that
12. So glad about that exam Much easier than Core 3 and some of the past papers
13. (Original post by ThusSpakeAlex)
were your lamba values like 5/3 and 1/3
Thats exactly what they were. I got them by solving 35(lambda)^2 - 70(lambda) +35 =140/9 if that sounds familiar to anyone?
14. [QUOTE=Mowerharvey;65659139]I actually find Core 4 slightly harder than core 3 myself [/QUOTE
Are you kidding me?
15. what did people get for the value of theta when you had to solve the quadratic with a cos identity?
16. (Original post by ValerieKR)
Almost right but the x^2 should have another factor of 2 in its coefficient
So you get 6/4+9x^2
I did it completley different, I Differentiated implicatley got Sec^ and the theta, changed it into Tan then rearranged the original to put it in but got 6 as well is this valid?
17. (Original post by Sam1231)
But it took longer than that just to get down to 8g ?
Around 300 definitely correct. It started at 10 grams and after 100 days it was down to 8. So in 100 days it's at roughly 80% of the original value. So 10*(0.8)^3=5.12 (to the power of 3 as it's the half life is approximately 100 days x 3) which is approximately half of the original 10.
18. (Original post by asdgsgh)
does anyone remember question 7 where you found the gradient that supposedly came out to e^4/2. Was there any follow on questions from this? Wondering because I remember getting something ridiculous like 72e^4 at one point and I'm curious about method marks
I got that too because I stupidly took the 12e^-2 to the top instead of leaving the 12 on the bottom -.-
19. I dropped a mark on the vectors question for calculating that 4root35xroot35 = 5root35. Genius.
20. im gonna cry i lost 10 easy marks that i normally would've down if i was at home doing that one question
it was easier than core 3 but I'm just dumb and not even my insurance choice is an option anymore

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