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AQA Core 3 - Thursday 6th June 2013 (AM) - Official Thread Watch

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    (Original post by Dirtybit)
    For inequalities did u guys get x less than or equal to one and then x is greater than or equal to one ?
    And for the question on the intercepts about ln bla bla the 2nd last part where it says find fg(x) in a certain form, anyone remember the answer?
    I got 1<x<3
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    (Original post by esen212)
    One of the many questions that confused me was the secx 5 one I only got two answers and that seems wrong for a 7 mark question... can any one clarify please
    I think you should have got sec x = -1/3 and sec x = 3 and so cosx=-3 and cosx=1/3 and you can't have cosx=-3 and so you can only have cosx =1/3 !

    I think a lot of the marks will go towards the beginning part using the identity and then also saying that cosx does not equal -3.

    Hope that helps!
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    (Original post by muhtaq11)
    Guys what was the first integration question on the last page?
    It asked you to integrate lnx by multiplying by 1. Xlnx-x I believe was the answer. Not sure about the next one (lnx)^2 it got complicated.
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    (Original post by Lay-Z)
    I got 1<x<3
    I got 1>x>3
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    (Original post by GeneralOJB)
    I got that too. You had to discard one of the values and the remaining value yielded 2 x solutions.
    Pheww, do you remember the value that had no solution? I put -3
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    I got 53 and a third pi for the volume of revolution question but then changed it into a top-heavy fraction and put 159 over 3 pi.

    And what makes it worse is that you didn't even have to change it anyway.
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    for the trig question, did anyone get 1.45 and 4.83?
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    (Original post by coriander)
    for the trig question, did anyone get 1.45 and 4.83?
    I got 1.23 and 5.05 :confused:
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    (Original post by swatson106)
    I got the same, cant have cos-1 of -3.
    yess i got that, thanks.
    it just seemed too easy for 7 marks
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    (Original post by Relf)
    I got 2, there were to values for cosx but one had no solutions, I think?? Answer was 5.05 and 1.??
    yep i got 5.05 and 1. something Thanks
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    (Original post by Alexandra1995)
    I got 1.23 and 5.05 :confused:
    erm lets hope i get some method marks... was your quadratic before -sec^2x+8 secx +3 ?
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    what did everyone get for last question? its between 2ln2 +2 and 2ln(3/2)
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    that was a pretty hard paper i think, harder than the jan paper at least!
    grade boundaries i think are going to be
    60 for an A
    53 for a B ?

    i think i've dropped roughly 15-20 marks
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    (Original post by esen212)
    Pheww, do you remember the value that had no solution? I put -3
    Yep, think it was!
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    why neg me? i am pretty sure i got 73 - can't i be confident?

    oh well
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    (Original post by Gary)
    what did everyone get for last question? its between 2ln2 +2 and 2ln(3/2)
    The answer is 2ln(3/2), checked on calculator + teacher confirmed.
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    (Original post by Gary)
    what did everyone get for last question? its between 2ln2 +2 and 2ln(3/2)
    it was definitely 2ln(3/2)
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    (Original post by Gary)
    what did everyone get for last question? its between 2ln2 +2 and 2ln(3/2)
    I got 2ln2 + 2 you?


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    (Original post by Dirtybit)
    The answer is 2ln(3/2), checked on calculator + teacher confirmed.

    (Original post by A-New-Start)
    it was definitely 2ln(3/4)
    damn... think i dropped like 4/5 marks for last question then -.-
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    (Original post by Briz)
    I got 2ln2 + 2 you?


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    samee. but a lot saying its 2ln(3/2) D:
 
 
 
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