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# Mr M's OCR (not OCR MEI) Further Pure 1 Answers May 2016

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1. Mr M's OCR (not OCR MEI) Further Pure 1 Answers May 2016

1. (5 marks)

2. (i) (2 marks)

(ii) (5 marks)

3. (i) and (1 mark)

(ii) (5 marks)

4. (i) (2 marks)

(ii) (2 marks)

(iii) (2 marks)

5. Proof (4 marks)

6. (i) (4 marks)

(ii) Sketch (2 marks)

(iii) and (3 marks)

7. (i) Shear with x axis invariant taking the point (0, 1) to (3, 1) (2 marks)

(ii)

Reflection in the line (6 marks)

8. (i) Show (1 mark)

(ii) (6 marks)

(iii) (3 marks)

9. (i) Show (3 marks)

(ii) Determinant = 0 when a = 3 so no unique solution. The equations are consistent because 3 x equation 3 - equation 1 = equation 2. (3 marks)

10. (i) and (6 marks)

(ii) Show (1 mark)

(iii) (4 marks)
2. Thanks again. Was question 3ii marks?
3. (Original post by Mr M)
Mr M's OCR (not OCR MEI) Further Pure 1 Answers May 2016

1. (5 marks)

2. (i) (2 marks)

(ii) (5 marks)

3. (i) and (1 mark)

(ii)

4. (i) (2 marks)

(ii) (2 marks)

(iii) (2 marks)

5. Proof (4 marks)

6. (i) (4 marks)

(ii) Sketch (2 marks)

(iii) and (3 marks)

7. (i) Shear with x axis invariant taking the point (0, 1) to (3, 1) (2 marks)

(ii)

Reflection in the line (6 marks)

8. (i) Show (1 mark)

(ii) (6 marks)

(iii) (3 marks)

9. (i) Show (3 marks)

(ii) Determinant = 0 when a = 3 so no unique solution. The equations are consistent because 3 x equation 3 - equation 1 = equation 2. (3 marks)

10. (i) and (6 marks)

(ii) Show (1 mark)

(iii) (4 marks)
do you think i will lose marks for keeping the 1/41 factorised for my answer to 10 iii?
4. (Original post by SGHD26716)
Thanks again. Was question 3ii marks?
5 marks
5. (Original post by duncanjgraham)
do you think i will lose marks for keeping the 1/41 factorised for my answer to 10 iii?
No of course not.
6. Difficulty of paper in your opinion?
7. Thanks so much you are a legend.
For question 2ii it said write as x+iy so shouldn't u of seperated them
8. (Original post by Super199)
Difficulty of paper in your opinion?
I'm not very good at judging as I have taken all the papers over a number of years rather than a few weeks like you but it seemed of standard difficulty to me.
9. (Original post by Bobby21231)
Thanks so much you are a legend.
For question 2ii it said write as x+iy so shouldn't u of seperated them
It really doesn't matter.
10. I would be grateful if you could answer these:

For question 6i, how many marks would I lose for writing 2 instead of root 5

For my sketch, the sketch looks fine and is obviously not to scale put goes through the two points but has radius 2 instead of root 5 so many would I lose there?

For question 8ii how many would I lose for not combining the two fractions?

For the last question I didn't simplify the end result so I have 1/something. It is correct but not simplified so how much would I lose there?

I'm sorry for this but I'm just a bit worried
11. I think I dropped 13 marks at most but should get a few more method marks
12. Thanks again for your answers - would you get ECF for the sum to infinity if you forgot to half the method of differences from 8 part ii?
13. How many marks do you think I will lose for not halfing the sum from the method of differences in 8. ii)? And will there be ECF for my sum to infinity?

And would I get any credit at all for 1 +4i and 5+2i for 6. iii? (not expecting anything however)
14. (Original post by Mr M)
It really doesn't matter.
Okay will I get error carried forward for the difference method as I forgot to half the first part as I didn't read it had 2 on top which means the second part is wrong?
15. (Original post by SGHD26716)
I would be grateful if you could answer these:

For question 6i, how many marks would I lose for writing 2 instead of root 5

For my sketch, the sketch looks fine and is obviously not to scale put goes through the two points but has radius 2 instead of root 5 so many would I lose there?

For question 8ii how many would I lose for not combining the two fractions?

For the last question I didn't simplify the end result so I have 1/something. It is correct but not simplified so how much would I lose there?

I'm sorry for this but I'm just a bit worried
You don't need to apologise.

6i) Drop 1.

6ii) You might not lose anything here.

8ii) Drop 1.

10iii) Drop 1.
16. (Original post by ComputeiT)
Thanks again for your answers - would you get ECF for the sum to infinity if you forgot to half the method of differences from 8 part ii?
I expect so. I think this will be a very common mistake.
17. (Original post by Bobby21231)
Okay will I get error carried forward for the difference method as I forgot to half the first part as I didn't read it had 2 on top which means the second part is wrong?
I've just answered this for someone else. I think so.
18. (Original post by Mr M)
I've just answered this for someone else. I think so.
Thanks
19. why root5 for 6i)?

Also how do you 10iii)?

20. Just wondering how many marks i would lose for:

7ii) somehow fluffed up my matrix and got

-3 8
0 3

or something, but correctly described what it was and showed methods and everything of how i got there

10ii) didnt do or really even imply over 41 (not sure how i missed that), i identified conjugate root and then the roots of those

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