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

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Original post by bartbarrow
100 UMS - 66
A* - 61
A - 55
B - 49
C - 43

I think my estimate might be a bit low for the 100 UMS mark but 66/67 would probably be 100, if not close to it.


I think you're probably being optimistic. C4 last year was just as hard (if not harder) and 100 UMS was 69
Original post by bartbarrow
100 UMS - 66
A* - 61
A - 55
B - 49
C - 43

I think my estimate might be a bit low for the 100 UMS mark but 66/67 would probably be 100, if not close to it.


what was 100ums last year ?
Original post by Jm098
I got landa as 1 and u as a 1/2


Yep that's what I got as well
Reply 583
Avatar for snimkar
snimkar
The questions was to differentiate tan^-1 (3x/2) by implicit differentiation, I didnt do it that way but if you look in the formula book it gives you the general form of differentiating inverse tan which is 1/(1+x^2). Putting in 3x/2 for our x value would give us 1/(1+9/4x^2) so times the whole thing by 4/4 would give you 4/(4 + 9x^2) thats what I did :/
did anyone for question 3b) get -57/2 + 9/2ln3
for the angles one did anyone get 99.6 and 260.4?
Cos theta was 23/35


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Reply 587
Avatar for duleep
duleep
Original post by -jordan-
k was 6.


i got k= 2 as well, thats what almost everyone i know got
lmao everyone got like 330 days for the half life and i got 5. no idea wtf i was on. 5 days doesnt even make sense

what was question 7??
Original post by jaackq1221
for the angles one did anyone get 99.6 and 260.4?

Yes that is what I got
Original post by Hibaval
Yes that is what I got


nice!
Reply 591
Avatar for ljb665
ljb665
1
Original post by snimkar
The questions was to differentiate tan^-1 (3x/2) by implicit differentiation, I didnt do it that way but if you look in the formula book it gives you the general form of differentiating inverse tan which is 1/(1+x^2). Putting in 3x/2 for our x value would give us 1/(1+9/4x^2) so times the whole thing by 4/4 would give you 4/(4 + 9x^2) thats what I did :/

I did that exactly so I got k as 4, I then went on and didn't even use by parts for the next bit, but still got C and pi. Think I'd get about 2/3 marks for the whole thing and need 96 UMS for my uni, oh well
Original post by OrangutanSean
I think you're probably being optimistic. C4 last year was just as hard (if not harder) and 100 UMS was 69


I agree, c4 was easier this year to be quite honest
Original post by duleep
i got k= 2 as well, thats what almost everyone i know got


Well I'm afraid it's 6, I have attached the working.
last questio.png
Reply 594
Avatar for duleep
duleep
Im really worried because the grade boundaries for this are gonna be really high!!:bricks::bricks:
Original post by Mitul106
i got -3x + 2 + 9/2x + whatever it was


Ffs i had C as 3
Original post by snimkar
The questions was to differentiate tan^-1 (3x/2) by implicit differentiation, I didnt do it that way but if you look in the formula book it gives you the general form of differentiating inverse tan which is 1/(1+x^2). Putting in 3x/2 for our x value would give us 1/(1+9/4x^2) so times the whole thing by 4/4 would give you 4/(4 + 9x^2) thats what I did :/


I did the same but don't think it is right
Reply 597
Avatar for snimkar
snimkar
OH **** I FORGOT THE 1/a **** me and my further maths end me yeah it was 6 ****
Anyone else run out of time? I didn't even get a chance to attempt Question 7 and 8 properly :frown:
Original post by jaackq1221
for the angles one did anyone get 99.6 and 260.4?


That rings a bell yeah

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