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    (Original post by CÜntington III)
    Theyre a bunch of useless ******s
    innit, thankkkk youuu
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    (Original post by HarryDESMOND)
    arsey fam where u @
    useless wan ker
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    (Original post by Mattematics)
    Got the same as you for all of them except the factorising question, which I'm pretty sure I got wrong.
    4cos^2x - cosx -3 = 0

    (4cosx +3 )(cosx - 1)

    x = cos^-1 ( -3/4)
    x = cos^-1(1)

    you only put the solutions for x=cos^-1(-3/4)


    what about the solutions of cos^-1(1)???
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    How many marks would I lose if I wrote 4cos^2x-4cosx =k instead of factorising it?


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    (Original post by jf1994)
    You should write questions for edexcel papers, completely undecipherable and unintelligible.
    You're just mad because you've got parkinsons and can;'t ****
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    please vote on the paper
    http://www.thestudentroom.co.uk/show....php?t=3343941
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    (Original post by frances98)
    194???
    Maybe, I can't remember exactly what he said
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    http://strawpoll.me/4406285/r sound kid


    want to link
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    162??????????
    • Thread Starter
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    I messed up real bad Trig threw me completley, couldn't even do the last two questions
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    (Original post by hasnain123)
    i got (3x-12)(x+4) why is that wrong ? someone help meh pls
    Is that your full factorisation?
    If so, you probably lack (2X+1).
    If not, then you will lose 1 mark for not fully factories as you have to put 3 out of the bracket
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    Has any one found the mark scheme the algebraic fraction finding B-A=45
    what does everyone think about how many marks would be allocated for an A?
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    (Original post by starkers1997)
    That was ******* difficult! I just couldn't get my head around the sequences question! I couldn't find r! First 4 questions were ok, then the rest were as hard as a brick wall! Expecting low grade boundaries....
    Found it a piece of piss tbh
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    Q1) yes
    Q2) yes
    Q3) I screwed up polynomial division and subbed in x=-1/2 and ended up with B=1/2A, forgot to carry on from there lol
    Q4) yes
    Q5) Second part, got a quadratic, but messed that up, so maybe 4/9 for that Q
    Q6) yes, unsure though because I got 162 as the shaded area. Integration gets you the area under the curve, and the shaded area was above the curve so I did []0,4 and added it to the integration of []9,4
    Q7) yes but got N=11
    Q8) yes
    Q9) When I differentiated, I stupidly forgot to put the minus for 300pir-2 so will only get about 2 method marks for that
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    Guys if anyone finds an unofficial markscheme like the one for c1 could you link it
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    Name:  image.jpg
Views: 1006
Size:  493.6 KBThis is not a markscheme this is just what my answers were. Minimal hate if not correct please
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    (Original post by Ukranium)
    4cos^2x - cosx -3 = 0

    (4cosx +3 )(cosx - 1)

    x = cos^-1 ( -3/4)
    x = cos^-1(1)

    you only put the solutions for x=cos^-1(-3/4)


    what about the solutions of cos^-1(1)???
    Solutions for cos(1) are 0 and 360. The range said less than 360, so it's just 0.
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    Sigh I flopped the last question and sequences first two parts. Got 261£
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    Does anyone have an unofficial mark scheme??
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    That paper was so hard! Didn't answer any of question 8
 
 
 
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