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# FP1 OCR Post Exam Discussion 11/06/2010 Watch

1. On the modulus and argument question, was the line essentially the line y=3?
2. (Original post by Bunkd)
On the modulus and argument question, was the line essentially the line y=3?

Yep.
3. wasnt it x=3 ? vertically through the middle of the circle...?
4. guys, what do you think 69/72 would be UMS?? 90?
5. (Original post by TroTro)
guys, what do you think 69/72 would be UMS?? 90?
It would probably be 100... Definitely above 90.
6. (Original post by jeremybag)
wasnt it x=3 ? vertically through the middle of the circle...?
Yeah it was x.
7. Okay cool - would it be below 97UMS?

Anyway, how did you guys find it? THe induction question was nice and easy for once...
8. (Original post by jeremybag)
wasnt it x=3 ? vertically through the middle of the circle...?

Was it? **** I really have embarassed myself this time

Do you remember what the question was?
9. (Original post by Bunkd)
Was it? **** I really have embarassed myself this time

Do you remember what the question was?
I think it was to draw the loci for |z|=|z-6|
10. overall, i thought the paper was pretty good. i want to see the answers too whos this Mr.M? soz im new so i dnt kno lol neway i got the reflection in y=x wrong but other than that i agree with all of u guys on the other stuff so i feel pretty confident! the first matrix question... anyone get -7?
11. (Original post by purplestarfish)
hello sorry to harass u but im kinda worried. reckon ive got about 45 marks on this paper would this be a U? =(
Probably C.
12. (Original post by lovemathslovelife)
overall, i thought the paper was pretty good. i want to see the answers too whos this Mr.M? soz im new so i dnt kno lol neway i got the reflection in y=x wrong but other than that i agree with all of u guys on the other stuff so i feel pretty confident! the first matrix question... anyone get -7?
The answers are in this thread - you may need to look back several pages.
13. (Original post by Mr M)
The answers are in this thread - you may need to look back several pages.
Mr.M, if i used degrees instead of radians for the argand diagram questions, will i be marked down?
14. (Original post by lovemathslovelife)
Mr.M, if i used degrees instead of radians for the argand diagram questions, will i be marked down?
Do you mean the argument questions?

Probably not on question 4 as it does not give an interval for the angle.

10 gives an interval in radians but you could have converted to degrees and then back again without losing any marks.
15. yh sorry i was talking about question 4 its just that i always work in degrees i hate radians lol
16. (Original post by Mr M)
OCR (not OCR MEI) FP1 Answers June 2010

10 (i) (5 marks)

(ii) Show (1 mark)

(iii) (5 marks)

Edit: tidied up a bit
Mr M.. that last iii) question 10 i think
with w^6 etc , i noticed the answers in i) cubed to make ii)
but i spent the last ten minutes trying to factorise a sixthic or w.e. u call ^6 8)
but yeah how do you work that out?

thankss

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