# Mr M's OCR (not OCR MEI) Further Pure 1 Answers May 2017

Watch

**Mr M's OCR (not OCR MEI) Further Pure 1 answers May 2017**1. (5 marks)

2. (5 marks)

3. (i) (2 marks)

(ii) (3 marks)

4. Proof (5 marks)

5. (i) Shear with x axis invariant taking (0, 1) to (5, 1) (3 marks)

(ii) (2 marks)

(iii) (2 marks)

(iv) 4 (2 marks)

6. (i) Sketch (3 marks)

(ii) and (5 marks)

(iii) Perpendicular bisector of line segment joining and (2 marks)

7 (i) Show (1 mark)

(ii) 0.629 (5 marks)

(iii) (1 mark)

8. a = -24, b = 45, c = -52 (7 marks)

9 (i) a = 2 (5 marks)

(ii) Any value other than a = 2 (1 mark)

(iii) p = -1 (3 marks)

10 (i) Show (4 marks)

(ii) (6 marks)

Thanks to Mr K and Mr H for their work on this.

8

reply

Report

#2

I think Question 8 and 9 (iii) are incorrect. I think that 8 should be a=-24, b=45, c=-52 and 9 (iii) should be -1.

Also on Question 7 (i) and (ii) I got those answers, but I don't believe I did it with the intended method. I formed two simultaneous equations to find Z1 and Z2, then did Z1 - Z2 and found a complex number, I then typed the values into my Calculator and came out with those exact values. Will I still get the marks for this or will I lose some?

Finally, how would you compare the difficulty of this paper to previous years?

Also on Question 7 (i) and (ii) I got those answers, but I don't believe I did it with the intended method. I formed two simultaneous equations to find Z1 and Z2, then did Z1 - Z2 and found a complex number, I then typed the values into my Calculator and came out with those exact values. Will I still get the marks for this or will I lose some?

Finally, how would you compare the difficulty of this paper to previous years?

1

reply

Report

#3

For q8, I don't think you need to divide through by 4.

a = -24

b= 45

c = -52

but thanks!!

a = -24

b= 45

c = -52

but thanks!!

1

reply

(Original post by

I think Question 8 and 9 (iii) are incorrect. I think that 8 should be a=-24, b=45, c=-52 and 9 (iii) should be -1.

**James2301**)I think Question 8 and 9 (iii) are incorrect. I think that 8 should be a=-24, b=45, c=-52 and 9 (iii) should be -1.

0

reply

Report

#5

Mr M,

What do you think the grade boundaries will be like? Some say that they found it very hard compared to previous years, and some thought it was easy.

Do you think about 68/72 for 100 UMS is probable?

Thanks again

What do you think the grade boundaries will be like? Some say that they found it very hard compared to previous years, and some thought it was easy.

Do you think about 68/72 for 100 UMS is probable?

Thanks again

0

reply

Report

#6

(Original post by

Dear Mr M,

Thanks for this again.

Just a few questions:

1.On the Argand diagram drawing one I drew the correct angles for the first two (z1 and z2), however didn't include much of a scale. How many marks would I drop?

2. On the question for finding p, I made a simple arithmetic mistake and got p=-2, not p=-1. How many would I lose for this?

3. On the final question, I made a small mistake and got close to the answer, but not the actual answer. I got most of the working right, however and accidentally only put one b value, not plus or minus. How many marks would I lose for this?

**shreys**)Dear Mr M,

Thanks for this again.

Just a few questions:

1.On the Argand diagram drawing one I drew the correct angles for the first two (z1 and z2), however didn't include much of a scale. How many marks would I drop?

2. On the question for finding p, I made a simple arithmetic mistake and got p=-2, not p=-1. How many would I lose for this?

3. On the final question, I made a small mistake and got close to the answer, but not the actual answer. I got most of the working right, however and accidentally only put one b value, not plus or minus. How many marks would I lose for this?

2. Depends where the error was; an error at the end would lose you 1 mark, earlier on it could lose you more.

3. I don't see why you would lose more than 1 mark for missing +/- when it is needed.

0

reply

Report

#7

(Original post by

Sorry fixed. Inability to read question and add.

**Mr M**)Sorry fixed. Inability to read question and add.

Also how would you compare the difficulty of this paper to previous years?

1

reply

(Original post by

Also on Question 7 (i) and (ii) I got those answers, but I don't believe I did it with the intended method. I formed two simultaneous equations to find Z1 and Z2, then did Z1 - Z2 and found a complex number, I then typed the values into my Calculator and came out with those exact values. Will I still get the marks for this or will I lose some?

Finally, how would you compare the difficulty of this paper to previous years?

**James2301**)Also on Question 7 (i) and (ii) I got those answers, but I don't believe I did it with the intended method. I formed two simultaneous equations to find Z1 and Z2, then did Z1 - Z2 and found a complex number, I then typed the values into my Calculator and came out with those exact values. Will I still get the marks for this or will I lose some?

Finally, how would you compare the difficulty of this paper to previous years?

I can't really compare difficulties.

0

reply

**shreys**)

Dear Mr M,

Thanks for this again.

Just a few questions:

1.On the Argand diagram drawing one I drew the correct angles for the first two (z1 and z2), however didn't include much of a scale. How many marks would I drop?

2. On the question for finding p, I made a simple arithmetic mistake and got p=-2, not p=-1. How many would I lose for this?

3. On the final question, I made a small mistake and got close to the answer, but not the actual answer. I got most of the working right, however and accidentally only put one b value, not plus or minus. How many marks would I lose for this?

2. so did I! drop 1 mark

3. 1 mark for no plus or minus and possibly lose more if other stuff was wrong

0

reply

Report

#11

Thanks for this again.

Just a few questions:

1.On the Argand diagram drawing one I drew the correct angles for the first two (z1 and z2), however didn't include a scale. How many marks would I drop?

2. On the question for finding p, I made a simple arithmetic mistake and got p=-2, not p=-1. How many would I lose for this?

3. On the final question, I made a small mistake and got close to the answer, but not the actual answer. I got most of the working right, however I accidentally also only put one b value, not plus or minus. How many marks would I lose for this?

0

reply

(Original post by

Mr M,

What do you think the grade boundaries will be like? Some say that they found it very hard compared to previous years, and some thought it was easy.

Do you think about 68/72 for 100 UMS is probable?

Thanks again

**Ucalyptas**)Mr M,

What do you think the grade boundaries will be like? Some say that they found it very hard compared to previous years, and some thought it was easy.

Do you think about 68/72 for 100 UMS is probable?

Thanks again

0

reply

(Original post by

Mr M do you think the grade boundaries will be lower this year 9say compared to the 2016 one), or did you find this paper fairly standard

**cfang99**)Mr M do you think the grade boundaries will be lower this year 9say compared to the 2016 one), or did you find this paper fairly standard

0

reply

(Original post by

Q10, if a=0 then b was independent of a, would that be in the mark scheme?

**yokitani**)Q10, if a=0 then b was independent of a, would that be in the mark scheme?

0

reply

(Original post by

10)ii) was +- a/(3)^0.5 i think

**jpb09**)10)ii) was +- a/(3)^0.5 i think

0

reply

Report

#19

(Original post by

I've just rationalised the denominator.

**Mr M**)I've just rationalised the denominator.

0

reply

(Original post by

Why is it -√2i and not +√2i?

**joe421**)Why is it -√2i and not +√2i?

0

reply

X

### Quick Reply

Back

to top

to top