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FP1 OCR Post Exam Discussion 11/06/2010

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

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

    Anyway, how did you guys find it? THe induction question was nice and easy for once...
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    (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?
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    (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|
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    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?
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    (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.
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    (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.
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    (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?
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    (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.
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    yh sorry i was talking about question 4 its just that i always work in degrees i hate radians lol
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    (Original post by Mr M)
    OCR (not OCR MEI) FP1 Answers June 2010


    10 (i) z = 2 + i (5 marks)

    (ii) Show (1 mark)

    (iii) w = 2 -i (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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