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    opinions??
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    couldn't do the last groups question
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    (Original post by maxgriffin)
    couldn't do the last groups question
    All of it or just finding the subgroups???
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    Christ that last question was a bit *****. The first two parts in particular. The last parts were okay.

    Overall not a bad paper, pretty average apart from that last question.

    Anyone got an unofficial mark scheme?
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    (Original post by jonnydowe)
    Christ that last question was a bit *****. The first two parts in particular. The last parts were okay.

    Overall not a bad paper, pretty average apart from that last question.

    Anyone got an unofficial mark scheme?
    Do you remember what you put for the second part of the first groups question?
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    (Original post by TheNicholas)
    Do you remember what you put for the second part of the first groups question?
    Was that the the subgroup? I believe I put {1, -1}
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    Community Mark scheme. Please contibute,
    https://docs.google.com/document/d/1...it?usp=sharing
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    (Original post by jonnydowe)
    Was that the the subgroup? I believe I put {1, -1}
    I got the same! Thought I was wrong though because going from an infinite group to a subgroup of order 2 seemed wrong to me haha
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    You just had to eliminate everything apart from a^3b I think but when it came to a^2b I had said that if ba = a^2b then that means a =ba^2b which is not true as a=a
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    (Original post by metasysta)
    Community Mark scheme. Please contibute,
    https://docs.google.com/document/d/1...it?usp=sharing
    It won't let me add but I could tell you my answer here and someone could transfer them??
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    (Original post by TheNicholas)
    It won't let me add but I could tell you my answer here and someone could transfer them??
    Yeah do that.
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    Can anyone tell me any of their answers for an unofficial mark scheme?
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    1i) e^(2*p*pi*i/5)
    1ii) didn't enter into calc, oops
    2) 9/14 root(14)
    3i) show
    3ii) y= x^2/(lnx +1)
    4i) show
    4ii) {1,-1}
    5) y=e^-x (Acos3x +Bsin3x) + 9cosx +2sinx
    6i) in Cartesian though: r= (0,1,1) + t(7,-2,-3)
    6ii) r= (2,0,1)+(7,-2,-3)
    7i) show: sin6theta =..........
    7ii) show: -1=<sin6theta/sin2theta<3
    8i) show
    8ii) show
    8iii) show
    8iv) {e, a^2, ab, a^3b} {e, a, a^2, a^3} {e, a^2, b, a^3b}
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    Average paper, last question was hard! If i actually worked harder would have easily come away with an A, but now it seems unlikely if its like 55-62.
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    (Original post by Sonnyjimisgod)
    Average paper, last question was hard! If i actually worked harder would have easily come away with an A, but now it seems unlikely if its like 55-62.
    Why would an A be 62? Standard FP3 boundary is 55 (very rarely higher), this paper I think was harder than usual so probably low 50s for an A.
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    I got rekt by the last question, was all good up until then. I got maybe 3 out of the 17 odd marks haha
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    finished question 1-7 in half an hour and spent entire hour doing the last one...groups and proof are always my least favourite
    FFS
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    1i) Z = e(2kπi/5) where k = 0,1,2,3,4 [2 marks]1ii) Z = 2e(2k+1)πi/5 where k = 0, 1, 2,3,4,5 [3 marks]

    This is in the unofficial mark scheme but the question says 0 less than the angle less than 2 pi, so i ignored n=0, anyone did the same?
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    Yeah that's what I did too, i swear it was 0<theta<2pi not inclusive for both parts?
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