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AQA A2 Mathematics MPC4 Core 4 - 9th June 2015 [Discussion & unofficial markscheme]

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Reply 2160
Avatar for Ali97
Ali97
6
Got an A*, Insha Allah.
For question 6b, does anyone know why I got C as being (-9,-2,18)? I have seen quite a few others have got that, will I pick up any method marks? And for part c, I found 1/2 of AC and 3/2 of AC and added it onto OB, will I get any method marks for this?


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Yeah -3/4 was the correct one. Then you inverse that and substitute into the x =... And find x coordinate.

You should get at least half the marks for getting up to that

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Meh, wasted 3 hours sat here worrying if my 65 (C3) and 62 (C4) is an A*

I need to start revising mechanics soon...
Having seen both papers, I think it will be:
64 for an A* in core 3
64 for an A* in core 4.
Original post by 2014_GCSE
Meh, wasted 3 hours sat here worrying if my 65 (C3) and 62 (C4) is an A*

I need to start revising mechanics soon...

ahaha im in your boat, but i've got chemistry tomorrow
Original post by Moskarasoul
I did it up to sinq= -3/4 and sinq=1/2

but then i just sin inverse'd it and i rejected one of the values

how many marks do you think that'll get me?



inverting finds q

unless you plugged it back in cos2q then you would miss those last marks

if it was out of around 7
I think you would miss 2-3
Reply 2167
Avatar for CD223
CD223
OP
10
Original post by problemq
Having seen both papers, I think it will be:
64 for an A* in core 3
64 for an A* in core 4.


You really think they'll be equal marks?


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Original post by ubisoft
That normal cutting the curve again was a hard question, I think very few people must've got that.


I thought it was quite tricky, I didn't realise how to do it until I'd left it and gone back to it, but I haven't really heard anyone complaining about it so maybe it wasn't as bad as I thought.
the model solutions dont match mark scheme
which is wrong?
Original post by Ali97
Got an A*, Insha Allah.


In Sha Allah, I didn't do that well, please make dua for me brother.
Reply 2171
Avatar for CD223
CD223
OP
10
Original post by ForgottenApple
the model solutions dont match mark scheme
which is wrong?


I believe the mark scheme is right. (I'm not bragging - I didn't get half the answers I've added the the mark scheme - it's been a collective effort haha).


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anyone?
for 8a) how man marks would you get for ignoring t=0 and x=0 ?
Original post by CD223
You really think they'll be equal marks?


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I do since core 4 contained a large number of easily accessible marks, the first few questions were very straightforward. The only challenging parts were normal tangent intersecting (3 marks easily accessible here), vectors last part. Core 3 had a similar number of challenging parts I thought.
Depends on the ums but in terms of marks I think 72 on C3 and 69 on C4. Hopefully should be 200 :biggrin:

You? @cd

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(edited 8 years ago)
Original post by hamza3256
but you missed out k. It does not equal to 0, it equals to k which is (1/4)-ln2
.correct me if i am wrong


K is a number that differentiates to zero
Original post by CD223
I believe the mark scheme is right. (I'm not bragging - I didn't get half the answers I've added the the mark scheme - it's been a collective effort haha).


Posted from TSR Mobile

but I imagine model solutions originate from a teacher
Original post by IAmYourdog
anyone?
for 8a) how man marks would you get for ignoring t=0 and x=0 ?


Well it was out of 7. You would miss one for finding c, one for rearranging and maybe one for substituting x and t?

So maybe 3, or 4 marks?
Original post by CD223
What do you think you've got on both papers?


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core 3 probably 85 and core 4 about 88 so no A* for me, so not going to Bath as need an A* in maths :frown: so gutted! :/ what about you?
Original post by ubisoft
Depends on the ums but in terms of marks I think 72 on C3 and 69 on C4. Hopefully should be 200 :biggrin:

You?

Posted from TSR Mobile


I would think so.

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