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OCR MEI - C1 - 13th May 2015

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YES PLEASE MAKE AN UNOFFICIAL MARK SCHEME


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Heard it was hard?


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Original post by DOPECYCLIST
anybody want me to make an unofficial markscheme?


Yes


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Reply 123
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Bruhh
10
Original post by JamesExtra
What was the actual question?


Circle = (x-10)^2+(y-2)^2 = 125

i) find centre and radius

ii) Verify that B is (21,0) then find other coords of intersection with axis (A,D,E)

iii) Find perpendicular bisector of BE and show that it passes through C

I think that was it?
Original post by DOPECYCLIST
12 (i) 14/3 ?


Hm - I got -14/3
Dw edexcel one was hard


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Just finished the OCR MEI Core 1 exam, just wondering how everyone found the exam?
Oh yeah I got all that I think. Which question number was that? What was the 12(I) everyone was complaining about?
Did you get for part iii) that the perpendicular bisector passed through the centre or not?


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Original post by Bruhh
Circle = (x-10)^2+(y-2)^2 = 125

i) find centre and radius

ii) Verify that B is (21,0) then find other coords of intersection with axis (A,D,E)

iii) Find perpendicular bisector of BE and show that it passes through C

I think that was it?

What did you get for the co-ordinated of D and E
Just found another question I got wrong. Damn I need this A
Reply 131
Avatar for Bruhh
Bruhh
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Original post by ScarletXxXRose
What did you get for the co-ordinated of D and E


(0,-3) and (0,7)
Original post by DOPECYCLIST
12 (i) 14/3 ?


thats what i got
What was question 12 part i? Everyone saying it was horrible
Did any one get fractional answers for the point of intersections on question 4 I think it was.

Did someone put 22 ROOT 2 for the surd question.

Did people get -2,1 for the minimum point on the last question.
Original post by DOPECYCLIST
anybody want me to make an unofficial markscheme?


Yes please! I could help if you like, and anyone else to help remember the questions etc?
Reply 136
Avatar for Bruhh
Bruhh
10
Original post by NQureshi
What was question 12 part i? Everyone saying it was horrible


y = 3x^2 +12x +13 = 0 and y = 2x + k

Find the set of values for k where they have 2 distinct points of intersection.
I thought it was super easy! There seems to be a pretty even spread though, some people were complaining about how difficult it was while others were saying it was easier than most of the past papers they did.
Eh it was okay but my friends hated it. Couldn't do 12i but I've never been able to do those q so it wa expecteld lol

Hoping for an A don't care how high
Original post by Bruhh
y = 3x^2 +12x +13 = 0 and y = 2x + k

Find the set of values for k where they have 2 distinct points of intersection.


Am I the only one that found this question really easy?

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