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# Maths AQA C1 revision - 14th January 2013 watch

1. i think i got more than 45 marks whats that
2. Was there any integration at all ? I didn't spot any. There was one question were it gave the differentiated form of dy/dx and it said find the equation of it. Do you put it in the form of "y=......ect.." you know when you get the curve of the equation then you differentiate to get dy/dx please tell me this is right, you do the opposite don't you ? tell me if u dont understand my concern
3. (Original post by man i)
i think i got more than 45 marks whats that
Considering most people found it easy Id say
75(MAX) - 61(A) 55(B) 49(C) 43(D) 37(E)
4. (Original post by dannyb2012)
Was there any integration at all ? I didn't spot any. There was one question were it gave the differentiated form of dy/dx and it said find the equation of it. Do you put it in the form of "y=......ect.." you know when you get the curve of the equation then you differentiate to get dy/dx please tell me this is right, you do the opposite don't you ? tell me if u dont understand my concern
you integrate dy/dx and got something like 2x^5-2x^3+5x+C
=>y=2x^5-2x^3+5x+c
=>solve for C e.g C=-2x^5+2x^3-5x-y
=>you should've got c=-1
=>y=2x^5-2x^3+5x-1

(the signs might be wrong but im 100% certain of the -1 at the end)
5. (Original post by SamTheMan95)
you integrate dy/dx and got something like 2x^5-2x^3+5x+C
=>y=2x^5-2x^3+5x+c
=>solve for C e.g C=-2x^5+2x^3-5x-y
=>you should've got c=-1
=>y=2x^5-2x^3+5x-1

(the signs might be wrong but im 100% certain of the -1 at the end)
I did that but I didnt put C and C=-1 Woop defo got some there then huh Cus I differentiated it back and wrote "Hence, dy/dx = 10x^4 - 6x^2 + 5
6. (Original post by dannyb2012)
I did that but I didnt put C and C=-1 Woop defo got some there then huh Cus I differentiated it back and wrote "Hence, dy/dx = 10x^4 - 6x^2 + 5
I'm a little bit unsure about your case mate. Here's the thing by writing y=......+C
C=-1 you are correct and would get all 5 marks for that. Although these kind of questions have that "take the last line as the answer" so you may drop the marks if your last line isn't y=.......+c C=-1 or y=.......-1
7. (Original post by dannyb2012)
Was there any integration at all ? I didn't spot any. There was one question were it gave the differentiated form of dy/dx and it said find the equation of it. Do you put it in the form of "y=......ect.." you know when you get the curve of the equation then you differentiate to get dy/dx please tell me this is right, you do the opposite don't you ? tell me if u dont understand my concern
It was a coded intergration.
You were given the f'(x) of a function.
And from that we have to work out the rate of change?

Then it tells you to work out the equation of the curve.
You intergrate it, BUT it's 5 marks so you have to work out +C by subsituating the points of P (1,4)??? Into the equation to get -1 as C
8. (Original post by dannyb2012)
Considering most people found it easy Id say
75(MAX) - 61(A) 55(B) 49(C) 43(D) 37(E)
Last year was 58 for an A.
I think this year is 65.
9. (Original post by Sitrix)
Last year was 58 for an A.
I think this year is 65.
I don't think its ever been 65.. It'll probably be 62-63 not 65
10. Did people draw this for the graph of x squared +6x+11 with vertex (3,2)
11. (Original post by ReviseLastMinute)
Did people draw this for the graph of x squared +6x+11 with vertex (3,2)
Ye nice 1
12. (Original post by Sitrix)
It was a coded intergration.
You were given the f'(x) of a function.
And from that we have to work out the rate of change?

Then it tells you to work out the equation of the curve.
You intergrate it, BUT it's 5 marks so you have to work out +C by subsituating the points of P (1,4)??? Into the equation to get -1 as C
That was part 1 question wasn't it express it in form of y=mx + c i got something like y = 9x and something else, but the last bit(Part 2, 5 marker) I didn't show any working out I just put the correct answer excluding c= -1 as u say
13. (Original post by SamTheMan95)
I'm a little bit unsure about your case mate. Here's the thing by writing y=......+C
C=-1 you are correct and would get all 5 marks for that. Although these kind of questions have that "take the last line as the answer" so you may drop the marks if your last line isn't y=.......+c C=-1 or y=.......-1
I didn't show any working out I just put the correct answer excluding c= -1 as u say do u think I would've still gotten some marks
14. (Original post by dannyb2012)
I didn't show any working out I just put the correct answer excluding c= -1 as u say do u think I would've still gotten some marks
Hopefully if this question was excluded from 'Consider the last line their answer' then you would get all 5 marks.
But it is highly likely that the last line will be considered your answer so if your last line isn't y=.........+c c=-1
then you may be looking at around 3 marks
15. (Original post by ReviseLastMinute)
Did people draw this for the graph of x squared +6x+11 with vertex (3,2)
You were just asked to draw the curve showing where the curve crossed the y axis. No need to perfect vertex.
16. (Original post by SamTheMan95)
Hopefully if this question was excluded from 'Consider the last line their answer' then you would get all 5 marks.
But it is highly likely that the last line will be considered your answer so if your last line isn't y=.........+c c=-1
then you may be looking at around 3 marks
I suppose 3 is better than none, although on some past papers it says "Condone +C"
17. Thanks to everyone on this forum I am now confident for the results Phew, Thanks guys
18. Here are the grade boundaries for an A in AQA MPC1 (Core 1) from January 2005 to June 2012:

59 - January 2005
61 - June 2005
61 - January 2006
61 - June 2006
59 - January 2007
60 - June 2007
59 - January 2008
59 - June 2008
62 - January 2009
63 - June 2009
62 - January 2010
63 - June 2010
56 - January 2011
62 - June 2011
61 - January 2012
58 - June 2012

The average for the above is 60.375.
19. For 100% UMS:

75 - January 2009
75 - June 2009
75 - January 2010
75 - June 2010
70 - January 2011
75 - June 2011
73 - January 2012
72 - June 2012
20. Anybody got a copy of the paper?

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