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

If i got 60 on C3 and 64 on C4 do you think i did enough to scrape an A*?

I got k=2! But some people I know got k=6 :/

for the singel angle identity questions what did everyone get for the 4 marker did they get 2 outside the bracket?

Yes i got those values! i crossed the 0 and 360 and wrote "not in range" for the others

Uuurgh so annoyed core 3 went really well for me but this didn't. Hope my core 3 ums brings me up to A* :/ For the integration question I got 9/2ln3 -69/2, but this comes up as a negative number.. Have I done it wrong?

If i got 60 on C3 and 64 on C4 do you think i did enough to scrape an A*?

2tanϴ = 3x

Differentiating it implicitly

2sec^2ϴ * (dϴ/dx) = 3

(dϴ/dx) = 3/(2sec^2ϴ)
= 3/(2(1+tan^2ϴ))
= 3/(2+2tan^2ϴ)
= 6/(4+4tan^2ϴ)

And from the question tanϴ=3x/2
Therefore tan^2ϴ = 9x^2/4
Putting this into (dϴ/dx) gives

(dϴ/dx) = 6/(4+4(9x^2/4))
= 6/4+9x^2 as required

All the answers I can remember putting. No idea if any of them are correct so feel free to comment:

A= -5/2
B= 9/2

-1+7X-22X^2/3

theta = 99.6° , 260.4°
(Rejecting cos0 = 1 as solutions are outside the range)

-3X +2+9/(whatever the factor was)

9/2ln3-69/2

181grams
330days

P=2/15

R=1/3

S=4/15

CosX=1/5

(2,0,-1)

C = (8,-18,-31)
D = (-4,18,29)

e^4/2

sin3x-3xcos3x = ......+pi



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I was so scared whilst doing first 5 questions because they were too nice and I was so convinced that the paper must have some nightmarish question lol
Glad to have been proven wrong.

Everything was very standard until question 7 imo. The vector geometry question had a strange arrangement but the difficulty was the same as every other recent vector geometry questions.

Question 7 algebra was slightly more involved than usual but nothing out of ordinary.

Question 8 would've been very difficult for non fp2 students had they not told us to rearrange the tan^-1(3x/2), but they pointed us towards the right direction so it was doable. The following differential equation was not the simplest one ever but at least it did not involve double parts like that C3.

I expect very average gb

Uuurgh so annoyed core 3 went really well for me but this didn't. Hope my core 3 ums brings me up to A* :/ For the integration question I got 9/2ln3 -69/2, but this comes up as a negative number.. Have I done it wrong?

Doea anyone remember the equations needed to work out thw half life one? As in what info they gave you

Cos x = 13/35 for me

I got (4, -10/3, -1/3) and (0, 10/3, -5/3)