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

i don't know the names of the topics bc i was literally taught core 4 in three weeks nor do i know if these are in order but...

Q1- binomial q - 11 marks (99% sure)
a) partial fraction 3 marks
b) binomial exp 7 marks
c) valid values of |x| 1 mark

q2-: Using the double angle formula on 3cos2(theta) to form and solve that quadratic - 5 marks (this is definite)

q3- the one with sina/sinb/cosa/cosb - 6? - i can't remember the individual parts apart from part a was a 1 marker

q4- the other partial fractions one 7?
There was the actual partial fraction (3 marks)
then the integral/area bit (4 marks?)

q5- exponential/decay - 11?
A) showing k was 1 mark
b) finding the m0 of the similar isotope was 2 marks?
C) finding the half life was 4 marks
*there was another part but i dont remember it*

q6- vectors - 15 (this is definite)
a)acute angle 5 marks
b) show they intersect 5 marks
c) find c and d 5 marks

q7- parametrics- 10
a) 5 or 6 marks? (finding gradient at t=2/3)
b) 2 marks (show that x=...)
c) 2 marks (show that the cartesian can be written in the form y=e/(fx)[ln(fx)])


q8- differential equation - 10 (this is definite)
a)3 marks
b) 7 marks


edit: I don't know why but i seem to think one of the questions was just two 4 markers, the only one that would fit with would be the second partial fraction question...someone correct me if they think i'm wrong and i'll edit

What was question 3 i cant remmeber it

The June 2011 paper which wasn't as hard as today's paper, was 51 for an A in C4.

Bloody Hell! That paper was a piece of cake - and it was 58 for A*! We are definitely safe then as this paper was much more difficult - in terms of the differential equation and the vectors...and the parametric equations.

It was a long time ago, so you better to compare our exam with the june 2015 one, which was of similar difficulty. A*=63, A=57

Bloody Hell! That paper was a piece of cake - and it was 58 for A*! We are definitely safe then as this paper was much more difficult - in terms of the differential equation and the vectors...and the parametric equations.

It was a long time ago, so you better to compare our exam with the june 2015 one, which was of similar difficulty. A*=63, A=57

In regards to the grade boundaries, people likely did a lot better this year even though the exam was harder. After how abysmal Core 3 was everyone really had their tryhard pants on. So i'd expect an A to be around 57-58

do u really reckon? im just too excited about that haha

what factors affect grade boundaries, i dont understand why they were so low in jun11 that paper's piss relatively speaking?

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

Plus we had June 11, Jan June 2012 2013, June 2014 2015 papers for practice that June 2011 students didn't have access to. So can't really compare gb with June 2011, even if June 2011 was a piss (or not)

The answers were U=1 lambada is -1/2

I thought lambda=1 and mu=1/2 and i got (2,0,-1)

If I could down vote I would.