Thanks
(Original post by Majeue)
I'd imagine you would get 2/4 marks.
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Mr M's OCR (not OCR MEI) Core 2 Answers May 2013 watch
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- 17-05-2013 13:38
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- 17-05-2013 13:40
(Original post by swaggy)
Hey does anyone remember the questions for 5i), 5ii), 6i) 6ii) and 9i) please
Oh thats right thanksdo you know the questions for 6, 7 and 9?
6ii) was the geometric series where she had 1800g and you had to first prove that the maximum number of experiments she could do could be expressed as 1.3^N<91 and then use logarithms to find the value of N
7i) you had to show that the area between the curve y = x^3/2 - 1 and the x axis was 9.4
ii) you had to find the area between the curve, it's tangent at the point (4,7) and the x axis
9i) you had to find the remainder when 4x^3 -7x - 3 was divided by (x-2)
ii) you had to prove that (2x + 1) was a factor and express the cubic as the product of three linear factors
iii) you had to find out the possible values of x when 4cos^3x - 7cosx - 3 = 0 -
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- 17-05-2013 13:40
How many marks do you think I would get if worked area of small triangle and equation of tangent correct- 2 marks?? Thanks
(Original post by Mr M)
Definitely.
(Original post by kiraeil)
For the area under curve question would I get some marks for workings as i worked out equation of tangent and area of small triangle but got complete wrong answer?
thanksLast edited by kiraeil; 17-05-2013 at 13:42. -
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- 17-05-2013 13:41
Mr M, i love you, take me back
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Ellie_Rosa
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- 17-05-2013 13:43
For question 8 i a and b I put y=1 and y=4 instead of coordinates - will I lose the marks?
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- 17-05-2013 13:45
This went so well
thanks for putting up your answers Mr. M, they were all the same as what i got!
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- 17-05-2013 13:48
Since there's not one in the OP:
Worked Solution to 8ii)
And: For the sake of completion:
Worked solution to 7)i)
Last edited by joostan; 17-05-2013 at 14:32. -
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- 17-05-2013 13:53
Found it harder than the c2 past papers. Hoping grade boundaries will be low.
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- 17-05-2013 13:54
(Original post by Mr M)
Mr M's OCR (not OCR MEI) Core 2 Answers May 2013
1. 6.39 (4 marks)
2. (i) 254 and 106 degrees (3 marks)
(ii) 71.6 and 252 degrees (3 marks)
3. (i)(3 marks)
(ii) c = - 11 (3 marks)
4. (a)(3 marks)
(b) (i)(2 marks)
(ii) a = 2 (3 marks)
5. (i) 62.2 (4 marks)
(ii) 34.0 (4 marks)
6. (i) 963 (3 marks)
(ii) 17 (6 marks)
7. (i) Show ... (4 marks)
(ii)(5 marks)
8. (i) (a) (0, 1) (1 mark)
b) (0, 4) (1 mark)
c) Any value where a > 1 and any value where 0 < b < 1 (2 marks)
(ii) Show ... (5 marks)
9. (i) 15 (2 marks)
(ii) Show f(-0.5)=0 and(6 marks)
(iii)and
and
(4 marks)
I'll be around a bit this afternoon and then part of this evening to answer questions. Please post in this thread rather than sending me private messages.(2 marks)
I got -6x^-4+k can u explain what I did rong -
mcavengers
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- 17-05-2013 14:00
For 7ii) I forgot to put the exact value so I put 1.23 (3sf) instead of 37/30. How many marks will I lose? :s
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- 17-05-2013 14:02
For 8 i) i said it crossed y axis at x= 0 therefore...
But i didn't state the coordinates specifically ie. In the format (x,y). Would i still get the mark ? -
kelvinbeyioku
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- 17-05-2013 14:04
does anyone remember what question 7ii was ?
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- 17-05-2013 14:05
Anyone know how the factor theorem question was worth 6 marks? Seemed a bit excessive to me...
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- 17-05-2013 14:08
(Original post by kelvinbeyioku)
does anyone remember what question 7ii was ?Last edited by joostan; 17-05-2013 at 14:26. -
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- 17-05-2013 14:11
(Original post by geekD96)
Heeeey for (4b) I never got this (i)(2 marks)
I got -6x^-4+k can u explain what I did rong -
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- 17-05-2013 14:21
(Original post by milesw97)
Anyone know how the factor theorem question was worth 6 marks? Seemed a bit excessive to me...
The one where you had to factorise the polynomial had 6 marks. -
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- 17-05-2013 14:21
(Original post by Mr M)
Mr M's OCR (not OCR MEI) Core 2 Answers May 2013
1. 6.39 (4 marks)
2. (i) 254 and 106 degrees (3 marks)
(ii) 71.6 and 252 degrees (3 marks)
3. (i)(3 marks)
(ii) c = - 11 (3 marks)
4. (a)(3 marks)
(b) (i)(2 marks)
(ii) a = 2 (3 marks)
5. (i) 62.2 (4 marks)
(ii) 34.0 (4 marks)
6. (i) 963 (3 marks)
(ii) 17 (6 marks)
7. (i) Show ... (4 marks)
(ii)(5 marks)
8. (i) (a) (0, 1) (1 mark)
b) (0, 4) (1 mark)
c) Any value where a > 1 and any value where 0 < b < 1 (2 marks)
(ii) Show ... (5 marks)
9. (i) 15 (2 marks)
(ii) Show f(-0.5)=0 and(6 marks)
(iii)and
and
(4 marks)
I'll be around a bit this afternoon and then part of this evening to answer questions. Please post in this thread rather than sending me private messages.
and also for 9ii) I got wrote (2x-3)(x+1) without the previous answer but then I wrote so x= -1/2 +2/3 or -1 will I lose a mark for having not written (2x+1)(2X-3)(X+1) ??? -
dakenSoren
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- 17-05-2013 14:22
For 4b ii) evaluated it as lim n -> infinity 12/n = 0 therefore it is
(0) - (-12/a) = 3 therefore a = 4, as I forgot the square sign on the a and left it as a = 4 how many marks would I lose for this? -
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- 17-05-2013 14:26
(Original post by mcavengers)
For 7ii) I forgot to put the exact value so I put 1.23 (3sf) instead of 37/30. How many marks will I lose? :s
Spoiler:ShowHe's more likely to notice your question if you quote him -
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- 17-05-2013 14:29
Have you got a copy of the paper?
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