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FP1 OCR Post Exam Discussion 11/06/2010

Maths exam discussion - share revision tips in preparation for GCSE, A Level and other maths exams and discuss how they went afterwards.

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1. Re: FP1 OCR Post Exam Discussion 11/06/2010
(Original post by snowman18992)
So it fills the whole circle to the right of the line and doesn't stop at
Re(z)=6?

And to my answer on whether the series converges?
it doesn't stop at 6

what did you say about convergence?
2. Re: FP1 OCR Post Exam Discussion 11/06/2010
(Original post by purplestarfish)
heyy sorryy..

for question 3.. could you have:

1/3n (n + 1/2) ( n- 1/2)

thanks
no that isn't right
3. Re: FP1 OCR Post Exam Discussion 11/06/2010
(Original post by Mr M)
no that isn't right
oh.. doesnt (2n+1) = (n+1/2) though?

how many marks would you drop for that? i got the 4n^2 - 1 thingie
4. Re: FP1 OCR Post Exam Discussion 11/06/2010
(Original post by Mr M)
it doesn't stop at 6

what did you say about convergence?
I just said that as n increases, there is no limit to n's value as it will just get bigger and bigger, so the series does not converge.

Thanks again!
5. Re: FP1 OCR Post Exam Discussion 11/06/2010
(Original post by snowman18992)
I just said that as n increases, there is no limit to n's value as it will just get bigger and bigger, so the series does not converge.

Thanks again!
that is good enough at this level
6. Re: FP1 OCR Post Exam Discussion 11/06/2010
(Original post by purplestarfish)
oh.. doesnt (2n+1) = (n+1/2) though?

how many marks would you drop for that? i got the 4n^2 - 1 thingie
Try any number to see if those expressions are equal.

Drop 1 accuracy mark if everything else was right.
7. Re: FP1 OCR Post Exam Discussion 11/06/2010
Hi

for 9b what was A equal to?
8. Re: FP1 OCR Post Exam Discussion 11/06/2010
I found it quite hard. I couldn't do the method of diffrences one and that last question!!!
i've totally messed up but oh well, it was better than June 09
9. Re: FP1 OCR Post Exam Discussion 11/06/2010
(Original post by Mr M)
Try any number to see if those expressions are equal.

Drop 1 accuracy mark if everything else was right.
How many would I drop for 2/3n(2n+1)(n-1/2)?

Cheers for the answers by the way.
10. Re: FP1 OCR Post Exam Discussion 11/06/2010
Mr M, what is 100 UMS usually - what do you reckon it will be?
11. Re: FP1 OCR Post Exam Discussion 11/06/2010
(Original post by Jeppasloth)
How many would I drop for 2/3n(2n+1)(n-1/2)?

Cheers for the answers by the way.
drop 1 mark
12. Re: FP1 OCR Post Exam Discussion 11/06/2010
may 100ums even be possible ? January 2010 was 62 for an A, and I thought this was easier.
13. Re: FP1 OCR Post Exam Discussion 11/06/2010
(Original post by TroTro)
Mr M, what is 100 UMS usually - what do you reckon it will be?
14. Re: FP1 OCR Post Exam Discussion 11/06/2010
lose 1 mark for putting 2 + i and 2 - i for 10 part i ? (instead of just one)
15. Re: FP1 OCR Post Exam Discussion 11/06/2010
(Original post by jeremybag)
lose 1 mark for putting 2 + i and 2 - i for 10 part i ? (instead of just one)
yes
16. Re: FP1 OCR Post Exam Discussion 11/06/2010
(Original post by Mr M)
that is good enough at this level
What do you reckon about the general difficulty of this paper? I personally found Question 10 slightly more challenging than past papers. Also, in question 10, I got one silly error right in the beginning where I did a - instead of a + by mistake, leading to all of my answers being wrong, but the method being fully correct, how many marks do you reckon I will get for that?? Thanks!
17. Re: FP1 OCR Post Exam Discussion 11/06/2010
(Original post by JChoudhry)
What do you reckon about the general difficulty of this paper? I personally found Question 10 slightly more challenging than past papers. Also, in question 10, I got one silly error right in the beginning where I did a - instead of a + by mistake, leading to all of my answers being wrong, but the method being fully correct, how many marks do you reckon I will get for that?? Thanks!
Did you not notice when you cubed it?

Lose one accuracy mark for each part I expect.

It seemed an average difficulty paper to me.
18. Re: FP1 OCR Post Exam Discussion 11/06/2010
Mr M, If you didn't fully simplify to get the final term (1/3)(n)((2n+1)(2n-1), then would you only lose one mark?
19. Re: FP1 OCR Post Exam Discussion 11/06/2010
(Original post by Mr M)
Did you not notice when you cubed it?

Lose one accuracy mark for each part I expect.

It seemed an average difficulty paper to me.
I think it was very obvious, but too late to scrap everything and start over as I ran out of time, if only I could use the 30minutes I had left over from C4
20. Re: FP1 OCR Post Exam Discussion 11/06/2010
Could we get the paper up now?
xx

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Last updated: June 20, 2010
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