Mr M's OCR (not OCR MEI) Core 2 Answers 18th January 2013 Watch

Chemengdon592
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#81
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Mr M..what is the least raw mark you need to get in this paper in order to secure 100 ums..i may have dropped as much as 5-8 marks ??? Thanks..anyone else feel free to answer this too!
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Mr M
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(Original post by Chemengdon592)
Mr M..what is the least raw mark you need to get in this paper in order to secure 100 ums..i may have dropped as much as 5-8 marks ??? Thanks..anyone else feel free to answer this too!
No-one knows as the papers haven't been marked yet but you won't get 100 UMS with those marks - sorry!
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olivers16
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(Original post by Mr M)
No-one knows as the papers haven't been marked yet but you won't get 100 UMS with those marks - sorry!
Mr M roughly what raw mark do you think is needed to get an A? June was 57 so do you think it might like a little lower? Thank you for posting the answers!
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missypink<3
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(Original post by Mr M)
Mr M's OCR (not OCR MEI) Core 2 Answers January 2013



1. (i) 39.5 degrees (2 marks)

(ii) 15.3 cm (2 marks)



2. (i) Show ... (2 marks)

(ii) Show ... (4 marks)



3. (i) k=\frac{3}{2} (2 marks)

(ii) y=x^3-\frac{3x^2}{4}+2 (5 marks)



4. (i) 32+80x+80x^2+40x^3+10x^4+x^5 (4 marks)

(ii) 1560 (3 marks)



5. (i) Show ... (3 marks)

(ii) x = 120 degs, 240 degs, 48.2 degs, 312 degs (4 marks)



6. (i) x=\frac{15}{2} (3 marks)

(ii) (a) Verify and S_{\infty}=64 (4 marks)

(b) x=-\frac{2}{3} (4 marks)



7. (i) Show ... (2 marks)

(ii) 15.2 cm (2 marks)

(iii) 9.76 cm^2 (5 marks)



8. (i) Translation by 3 units in the positive x direction (2 marks)

(ii) a = 8 (1 mark)

(iii) b = 6.48 (2 marks)

(iv) c=\frac{16}{5} (4 marks)



9. (i) Show ... (6 marks)

(ii) a=\frac{1+\sqrt{7}}{3} (6 marks)
Could you show a worked solution to 7(iii) and 8(iv).
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Mr M
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(Original post by missypink<3)
Could you show a worked solution to 7(iii) and 8(iv).
I did these questions months ago. I have no idea what the questions were even about now.
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xT4Z1N4TRx
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Nevermind thanks :-)
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TheMan100
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Does anyone know where I can find this past paper online?
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Jesserz
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can anyone send me the link for the actual 2013 jan ocr math paper not the mei one... Or where the scans are cant find them anywhere
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Jesserz
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(Original post by Mr M)
Questions are on page 7 of the other OCR C2 thread in this forum.
What thread?
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rihanna13
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How do you work out question 5???🙆
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BrokenS0ulz
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#91
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Can anybody tell me why you reject the negative solution for a on the last question?
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