The Student Room Group
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>

Edexcel A2 C4 Mathematics June 2015 - Official Thread

Scroll to see replies

Reply 3400
Avatar for C++
C++
7
Original post by cmfunk
forgot to mention approx 50 in d1


432 UMS; I'm sorry but the A cut is around 480.
c1- 82 ums
c2- 88 ums
s1- 74 ums
d1- 90 ums

c3- 48/75 raw
c4- 60/75 raw

is there still a chance for A?
Original post by C++
The radius was the y coordinate of P. So no, you're method is incorrect. I'm sorry.


how many marks would I lose do you think. Wrong cone volume value and thus wrong final volume
Original post by 1504teal
I know I realised in the end I couldve used 9. I know I got the wrong answer though. How many marks do you think I'll lose for not getting a correct cone volume and so not the correct answer ?! :/


uft, wow, not sure I'm the right person to ask this but I imagine just one or 2 accuracy marks? That's if you got the right integral and found the area of a cone and subtracted it?
Original post by C++
432 UMS; I'm sorry but the A cut is around 480.


It's not around 480, it is 480.
Original post by victoria_mae
c1- 82 ums
c2- 88 ums
s1- 74 ums
d1- 90 ums

c3- 48/75 raw
c4- 60/75 raw

is there still a chance for A?


ye just about
Reply 3406
Avatar for C++
C++
7
Original post by 1504teal
how many marks would I lose do you think. Wrong cone volume value and thus wrong final volume


I suspect around 3 or 4 lost marks.
How many marks do you reckon I've lost if
Didn't do the 3 mark shortest distance on the vectors one
Showed all my working but put 4000 for the population and therefore didn't finish
The second volume of revolution part was completely wrong but showed how you would do it with diagram and correctly integrated.
Please help :frown: I need to get a B in this to even out to an A overall
throw in some #arseyfacts whilst waiting for the ms...here's one

Arsey won the Tour De France...in Scotland #arseyfacts
I can feel arsey is close
Reply 3410
Avatar for C++
C++
7
Original post by matty6mitchell
It's not around 480, it is 480.


I believe 480 was last year's cut; they fluctuate.
Looking at around 67/68 for C4 I think and 69/70 on C3, what are the chances of this being an A*?
Original post by C++
432 UMS; I'm sorry but the A cut is around 480.


so 100,100,97
aprox 85 c3
30/75 c4 raw marks
50/75 d1 raw
not enough
What grade would you say 45 raw mark would be?
Original post by Arsey's Hole
I can feel arsey is close


I bet you can...
Original post by domcandrews
What's the bets Arsey's sitting there thinking, why the **** is the answer "Math Error" then after 10 minutes he reads the question again lol.

Exactly the same as what I did xD
LOOOL i am such a foking lolka !!!

in 3b, i just did not read the question properly and basically substituted limits for what i have found in part a and got 32ln2 - 12

for question 7c, i was not sure whether to write 0.4.. or 27.1 and wrote both saying that this is what u get if u use radians and this is what u get when u use degrees

for 8c, i found the volume of the whole thing, but ****ed up the second bit

how many marks u reckon i will lose for each one?

cheers guys
Original post by thatNoseyParker
uft, wow, not sure I'm the right person to ask this but I imagine just one or 2 accuracy marks? That's if you got the right integral and found the area of a cone and subtracted it?


I'll assume 5 to be on the safe side lol sigh thanks anyway!!!
Original post by jubilant_joej
Looking at around 67/68 for C4 I think and 69/70 on C3, what are the chances of this being an A*?


You'll probably just scrape that A* pal
Original post by NCHOWD
C1 - 79 UMS
C2 - 80 UMS
C3 - 54/75
C4 - 51/75
S1 - 78 UMS
D1 - 62 UMS

Grade?


80 + 79 + 72 + 68 + 78 + 62/600 = 439/600 73% so a B

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you