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AQA A Level Maths Core 1 - 18th May 2016 [Exam Discussion]

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Original post by tajtsracc
Anyone else get

x = -1 plus or minus root 5?


Yes, I got -1 plus or minus root 5. I remember having to divide -4 by 4 to get the -1.

I also got 11.25 for the integration.

Coordinates of B, pretty sure I got (12, -7)

And I also got 9 (square root of 81) for CT
Original post by Jacobisswaggy
For the coordinates of Q, I don't think I wrote (-5/4,0) I just wrote -5/4 - did you have to give the full coordinate? It was obvious that y was 0 :/


didn't they only asked for the x-coordinate ?
Original post by musslih
Which Year and month of past year paper are you referring to?


The June 2015 C1 paper.
(edited 7 years ago)
For the circle question, the root was obviously root65, but what did you get for k?

(x+2)^2+(y-7)^2=root65 +5
What do you lot think grade boundaries will be for this paper? how much will 70ums be and above
Original post by chemica
didn't they only asked for the x-coordinate ?


Yes, just writing -5/4 is fine.
Original post by beanigger
What do you lot think grade boundaries will be for this paper? how much will 70ums be and above


last year was 58 for a B ( 70 ums) , I reckon it will be about 55 this year
Original post by euan__
only had to give the x value


Thank god for that. Thanks!
Original post by Thequickspark
For the circle question, the root was obviously root65, but what did you get for k?

(x+2)^2+(y-7)^2=root65 +5


k = 65...

(x - a)^2 + (y - b)^2 = r^2 where a is the centre x, b is the centre y, and r is the radius.
Reply 149
Avatar for FJCX
FJCX
7
Original post by Thequickspark
For the circle question, the root was obviously root65, but what did you get for k?

(x+2)^2+(y-7)^2=root65 +5


WHat did everyone get for the question that asked you to give the x-coordinates in the form m+_ root n? i completed the square for it and got -1 and root 5 over 2
having 90 ums in c3 and c4 and 75 in every other paper equates to a* right? ( ums in c3 and c4 must add up to 180)
Original post by beanigger
What do you lot think grade boundaries will be for this paper? how much will 70ums be and above



Well 2015 64 marks was an A, which is 70 UMS. I'd say a couple lower, but not much.
Original post by beanigger
What do you lot think grade boundaries will be for this paper? how much will 70ums be and above


Please someone tell me!! so i must have made a mistake at doing the equation of P, but used the right methos, meaning i got Q wrong and so i also got the area of the triangle wrong and the total shaded area wrong! :frown: but used the right methods for all of it, do i get any carry through marks and please can someone tell me how many marks i will get for this question!!

(think i got most the rest of the paper corrcet)
Original post by clairebear101
Please someone tell me!! so i must have made a mistake at doing the equation of P, but used the right methos, meaning i got Q wrong and so i also got the area of the triangle wrong and the total shaded area wrong! :frown: but used the right methods for all of it, do i get any carry through marks and please can someone tell me how many marks i will get for this question!!

(think i got most the rest of the paper corrcet)


That's really hard to say, maybe you dropped 2, but if the mark scheme is harsh, that could be dropped 3 or 4...
Did anyone else use the quadratic formula for the question with the square root n in it?
How many marks will i get on circle question? I stupidly cant add up so got root75 instead of root65 for radius. Which meant where the lenth should have been root81 i got root91. Surely ECF marks there?
Help make the unofficial mark scheme here! :bl: :bl:
Reply 157
Avatar for voltz
voltz
6
Original post by HazNut134
Did anyone get a fraction for the x coordinate in the integration question near the end?

Felt like this was the hardest paper so far, I missed out like 4 questions...


I found it so hard, I've been getting high B's/A's on all the past papers but I think I'll be lucky to get a B...:frown:(
Original post by FJCX
WHat did everyone get for the question that asked you to give the x-coordinates in the form m+_ root n? i completed the square for it and got -1 and root 5 over 2


i got -1+√5

i didn't get over 2, how many marks was it ?
Original post by timtjtim
k = 65...

(x - a)^2 + (y - b)^2 = r^2 where a is the centre x, b is the centre y, and r is the radius.


I think you're half right. K=70

You forgot the outside parts of the squares. 4+1=5

5+65 (as you rightly said) = 70.

Looks like I didn't get 100 ups :frown:

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