You are Here: Home >< Maths

# OCR (not-MEI) FP1 - Friday 20th May 2016

Announcements Posted on
Why bother with a post grad? Are they even worth it? Have your say! 26-10-2016
1. For the sum I got -1/k for the product 1 and the the second part 1/k^2

And for the difference method question I got the sum to infinity as 1/3 but others got 1/6 how about u?
2. I thought that was alright, at least compared to M2...
I got:
1)
1/2 * n(n-1)(2n+3)
2)
i) sqrt(3)-3i
ii) -1/49 + 4sqrt(3)/49 i
3)
i) alpha + beta = -1/k
alpha * beta = 1
ii) (alpha + 1/alpha) * (beta + 1/beta) 1/k^2
4)
i) (5a-3b 10 0)
ii) (6b-5)
iii) (6a 12 18)
(4a 8 12)
(-a -2 -3)
5) [inductive proof]
6)
i) |z-3-3i| = sqrt(5)
ii) [argand diagram]
iii) 2 + 5i, 4 + i
7)
i) Shear, x axis invariant, (0,1) mapped to (3,1)
ii) (0 -1)
(-1 0)
Reflection in y=-x
8)
i) [Show that]
ii) n / 3(2n+3)
iii) 1/ 2(2n+1)
9)
i) [Show that]
ii) The equations were consistent
10)
i) +/- (5 + 4i)
ii) [Show that]
iii) +/- (5/41 +/- 4/41 i)
3. I think I got everything bar the argand diagram question (how many marks was that?) Strange times when C1 is harder than FP1
4. (Original post by farryharnworth)
I thought that was alright, at least compared to M2...
I got:
1)
1/2 * n(n-1)(2n+3)
2)
i) sqrt(3)-3i
ii) -1/49 + 4sqrt(3)/49 i
3)
i) alpha + beta = -1/k
alpha * beta = 1
ii) (alpha + 1/alpha) * (beta + 1/beta) 1/k^2
4)
i) (5a-3b 10 0)
ii) (6b-5)
iii) (6a 12 18)
(4a 8 12)
(-a -2 -3)
5) [inductive proof]
6)
i) |z-3-3i| = sqrt(5)
ii) [argand diagram]
iii) 2 + 5i, 4 + i
7)
i) Shear, x axis invariant, (0,1) mapped to (3,1)
ii) (0 -1)
(-1 0)
Reflection in y=-x
8)
i) [Show that]
ii) n / 3(2n+3)
iii) 1/ 2(2n+1)
9)
i) [Show that]
ii) The equations were consistent
10)
i) +/- (5 + 4i)
ii) [Show that]
iii) +/- (5/41 +/- 4/41 i)
I think I got the same answers for the questions I remember so that's pretty good but am gutted I couldn't do the last question
5. (Original post by Bobby21231)
For the sum I got -1/k for the product 1 and the the second part 1/k^2

And for the difference method question I got the sum to infinity as 1/3 but others got 1/6 how about u?
I got the same as you for both of those.
6. I have a feeling it was 2/3 for the argand diagram and 3 for the pints of intersection but I could be wrong
(Original post by SGHD26716)
I think I got everything bar the argand diagram question (how many marks was that?) Strange times when C1 is harder than FP1
7. (Original post by farryharnworth)
I thought that was alright, at least compared to M2...
I got:
1)
1/2 * n(n-1)(2n+3)
2)
i) sqrt(3)-3i
ii) -1/49 + 4sqrt(3)/49 i
3)
i) alpha + beta = -1/k
alpha * beta = 1
ii) (alpha + 1/alpha) * (beta + 1/beta) 1/k^2
4)
i) (5a-3b 10 0)
ii) (6b-5)
iii) (6a 12 18)
(4a 8 12)
(-a -2 -3)
5) [inductive proof]
6)
i) |z-3-3i| = sqrt(5)
ii) [argand diagram]
iii) 2 + 5i, 4 + i
7)
i) Shear, x axis invariant, (0,1) mapped to (3,1)
ii) (0 -1)
(-1 0)
Reflection in y=-x
8)
i) [Show that]
ii) n / 3(2n+3)
iii) 1/ 2(2n+1)
9)
i) [Show that]
ii) The equations were consistent
10)
i) +/- (5 + 4i)
ii) [Show that]
iii) +/- (5/41 +/- 4/41 i)
I agree with all of these except 8iii, which IIRC was a sum to infinity, so shouldn't have an n anywhere in it. <- THIS IS WRONG I CAN'T ****ING READ
8. (Original post by sdhand)
I agree with all of these except 8iii, which IIRC was a sum to infinity, so shouldn't have an n anywhere in it.
I'm fairly sure it was a sum from n to infinity
9. (Original post by sdhand)
I agree with all of these except 8iii, which IIRC was a sum to infinity, so shouldn't have an n anywhere in it.
Between n and infinity so the sum from 1 to n-1 needs to be defined in terms of n

Posted from TSR Mobile
10. (Original post by farryharnworth)
I'm fairly sure it was a sum from n to infinity
****, if that's true I didn't read the question correctly. There goes some marks.
11. Was also 1/blah instead of 2/blah as shown in part i

Posted from TSR Mobile
12. (Original post by farryharnworth)
I'm fairly sure it was a sum from n to infinity
I think there was just a sum
To infinity as well as this
13. (Original post by sdhand)
I agree with all of these except 8iii, which IIRC was a sum to infinity, so shouldn't have an n anywhere in it.
Actually the lower limit was n, so you had to subtract the equation with n-1 substituted for n. Their answer is right.
14. (Original post by drandy76)
Was also 1/blah instead of 2/blah as shown in part i

Posted from TSR Mobile
Yeah I'd don't read the 2 as well
15. (Original post by Bobby21231)
Yeah I'd don't read the 2 as well
Same lol. Think I'll have got 0 for that one.
16. Was a pretty good paper, only thing i fear now is very high boundaries :s
17. (Original post by sdhand)
Same lol. Think I'll have got 0 for that one.
At least it weren't just me Do u know how many marks it was?
18. (Original post by Bobby21231)
At least it weren't just me Do u know how many marks it was?
Think between 3 and 5, don't know for sure though.
19. (Original post by sdhand)
Think between 3 and 5, don't know for sure though.
Okay thanks I'm hoping I will have only dropped 10 marks at most as I know I lost 4 on the last question and then some on here
20. (Original post by Bobby21231)
Okay thanks I'm hoping I will have only dropped 10 marks at most as I know I lost 4 on the last question and then some on here
I think I dropped about 10 as well. Should be a low to middling A if the previous years grade boundaries are anything to go by.

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: May 27, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### University open days

Is it worth going? Find out here

Poll
Useful resources