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# OCR FP1 (not MEI) jan 20th watch

1. (Original post by hellopoppet)
I think so!
No I mean I agree with you! I summed from 1 to inf not from 2 to inf by mistake.
2. The argand diagram, should it be a bisector or 2 circles?
3. 2 circles I think (hope!!).
4. A pair of congruent circles.
5. to mr.m the answer for question 10(iv) i wrote from (1,1) to (21,1). Is that equeallyacceptable
6. (Original post by Mr M)
A pair of congruent circles.
Wonderful, it's just that 2 people in my class got a bisector and another and I got two circles, so we were debating. Thank you so much.
7. (Original post by imzi)
to mr.m the answer for question 10(iv) i wrote from (1,1) to (21,1). Is that equeallyacceptable
yes
8. can anyone remember the question for 2ii?
9. (Original post by TWP1992)
can anyone remember the question for 2ii?
find the value of

(alpha + 1) (beta + 1) (gamma + 1)
10. i expanded that and got -D/A + C/A + 1 and used the values from u expression and got 9.5 not 4
11. No need to expand, x=u-1, so u=x+1.
12. (Original post by mcp2)
No need to expand, x=u-1, so u=x+1.
thanks, i wasn't sure whether alpha and beta and gamma referred to the original or the expression you worked out
13. Q6, I somehow managed to get 3.2 for part a). Then on b), this obviously meant my values for p and q were wrong. How many marks (3 for first, 4 for second) do you think i'll get/drop?
14. what was the question for 9ii?
15. (Original post by TWP1992)
what was the question for 9ii?
solve

2x - y + z = 1
3y + z = 2
x + y + az = 2
16. Solve the simultaneous equations, can't remember the matrix though :/
17. (Original post by destined-monkey)
Q6, I somehow managed to get 3.2 for part a). Then on b), this obviously meant my values for p and q were wrong. How many marks (3 for first, 4 for second) do you think i'll get/drop?
I may regret asking this but where did you get 3.2 from?

You will clearly lose 3 accuracy marks (1 in the first part and 2 in the second part). It is possible you could all get the method marks but it depends what you did.
18. i was just wondering whether there was a reason you didn't find the value of a?
19. (Original post by TWP1992)
i was just wondering whether there was a reason you didn't find the value of a?
Because the question didn't ask you to find a.

And because we only have three equations and four unknowns.
20. but you can find a quite easily, did it ask you to solve in terms of a?

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