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# AQA A2 Mathematics MPC3 Core 3 - Wednesday 15th June 2016 [Official Thread] watch

1. (Original post by mattyt307)
I got x<-6 x>3 and 1<x<2 lol
SAME. I GOT THIS EXACTLY (but the less than/more than and EQUAL to sign)
2. (Original post by KB_97)
No way!! That's too high. Loads of people found it so hard. There's people (including myself) that have straight up lost out chunks of marks as well as stupid mistakes. I think we should do a poll for what people think an A grade boundary will be.
See the updated post. Most people had complaints on the last question, but you could work out part b and c without part a. (Adding the two equations gives you 2secx=-5.2
, secx = -13/5
cosx=-5/13
On the integration by parts of ln(3x)/x multiplied by something or whatever it was, i got the integration by parts..... but then with the rotating around an axis... how did people make the numerator ln(3x) because it was squared???
you bring the 2 down because its ln, so it will be 2ln3x/x anf then bring the 2 out next to pie and do and it will ln3x/x then continue
4. I got f(x) </= 8ln8 -8
5. Anyone got x<-6 and x>3 for the third question?
Also, what did you get for substitution? I got something like 18/3 or 18/2 (can't remember really)
The second part of integration by parts question: anyone had to use integration by parts twice?
I was able to do every single past paper in less than an hour and get an A*, but not this one.. so, I believe grade boundaries should be much lower
6. I'm hoping for about 50-53 for an A because it looks like people either ran out of time/missed out some questions/silly mistakes and people found it generally more difficult than their other papers. Someone please make a poll thing so we can vote
7. Pretty sure x^2>>mod so it was my answer but after this exam I have no clue. Was getting 100% in my c3 but that test was a disgrace.
8. (Original post by tanyapotter)
65 for an A?! 64 was an A* last year, and that paper was really easy.
Are you trolling?
deffo a troll
9. (Original post by Mowerharvey)
What did everyone get for tbe range?
Think I got f(x) </= 8ln8 -8 or something
10. (Original post by hish11)
Got straight A*/A students saying they dropped 15 marks, at least.
Reckon
a*-61
a-57
b-54
c-51
d-47
It will never been 60 for an A*. Maths is the most subscribed subject for AQA , inevitably with students skewing the grade boundaries.

Add 3 to each, then it'll a be more sensible prediction. Saying that, it was not a hard paper.
11. (Original post by KB_97)
SAME. I GOT THIS EXACTLY (but the less than/more than and EQUAL to sign)
remember its the modulus of 5x-something or whatever, so if you sketch the graphs/have a graphical calculator you'll see they dont interest at -6

12. I should get an A* (assuming an A* will be 30 marks).

That was an unacceptably hard paper and it's unfair for AQA to make this year's paper so hard in comparison to all the papers. I can say a goodbye to my firm uni that's for sure, and now I genuine think I'll be going through clearing.
13. (Original post by khuman97)
you bring the 2 down because its ln, so it will be 2ln3x/x anf then bring the 2 out next to pie and do and it will ln3x/x then continue
I was thinking of doing that, but I thought that ln(3x)^2 was different to ln(3x^2)? Like can't you only bring down the 2 if it's in the ln?
14. (Original post by Pablo Picasso)
I did the paper. Excpet from one, no questions were challenging. It's all overexaggeration
Joes like you are the reason ISIS exists

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15. Got straight A*/A students saying they dropped 15 marks, at least.
Reckon
a*-61
a-55
b-50
c-45
d-40
16. Range question
17. (Original post by Marelitza)
I was able to do every single past paper in less than an hour and get an A*, but not this one.. so, I believe grade boundaries should be much lower
Same. I used to finish the paper in less than an hour but I was working till the last second for this one. They should be much lower
I was thinking of doing that, but I thought that ln(3x)^2 was different to ln(3x^2)? Like can't you only bring down the 2 if it's in the ln?
Correct, you had to change the integral to
(lnx) * (lnx)/(x^2)

set u=lnx, v'=lnx/x^2

and go from there

I'm sticking by

100 UMS - 70 (maybe 69)
A* - 62
A - 55
B - 51
C - 46
D - 41
E - 36
19. (Original post by the1pedro)
I got f(x) </= 8ln8 -8
Me too! I was getting scared. Hopefully its right.
I was thinking of doing that, but I thought that ln(3x)^2 was different to ln(3x^2)? Like can't you only bring down the 2 if it's in the ln?
You're right it was (ln3x)^2 which can't be written as anything else.

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