CCEA AS Maths- C1 Wed 18th May

I'm not sure sorry! I will ask around and see!! How did you find it

Hows everyone feeling for C1 Maths for CCEA tomorrow?

Hadn't seen a CCEA thread, so decided to make one!

What are the normal raw marks for an A grade and so on?
Every other exam board seems to allow you to calculate them except CCEA


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Does anyone have a solution for this?

If the roots are n and n+1, then the quadratic = (x-n)(x-(n+1))
Multiplying this out gives X^2-(2n-1)x+n(n+1)
Which means b^2 = (2n-1)^2 = 4n^2-4n+1
and c = n^2+n so 4c = 4n^2+4n
giving b^2-4c = 1

If the roots are n and n+1, then the quadratic = (x-n)(x-(n+1))
Multiplying this out gives X^2-(2n-1)x+n(n+1)
Which means b^2 = (2n-1)^2 = 4n^2-4n+1
and c = n^2+n so 4c = 4n^2+4n
giving b^2-4c = 1

If the roots are n and n+1, then the quadratic = (x-n)(x-(n+1))
Multiplying this out gives X^2-(2n-1)x+n(n+1)
Which means b^2 = (2n-1)^2 = 4n^2-4n+1
and c = n^2+n so 4c = 4n^2+4n
giving b^2-4c = 1

Please sign this petition to lower the grade boundaries
https://www.change.org/p/ocr-examination-board-lower-the-grade-boundaries-on-the-ocr-core-1-mathematics-paper?recruiter=544001411&utm_source=petitions_show_components_action_panel_wrapper&utm_medium=copylink
Thanks

I didnt have a clue about the last question! but it was the only thing i put nothing down for :P.
Anyone else think there was a lot of disgusting fractional work and calculations (had to do loads of sums at the side of the page) in that paper or something? cant remember that aspect being as bad in the past papers!

I definitely had one certain question with a lot of fractional work, but I got there in the end.