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AQA A2 Mathematics MPC3 Core 3 - Wednesday 15th June 2016 [Official Thread] watch

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    what just happened?
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    (Original post by maisym00)
    I got -21.3 and -88.7 too, how did you get 3 root 5 /3
    It was -root5 im pretty sure
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    (Original post by C0balt)
    I think I got everything right if I didn't make any silly mistakes.
    But there was solid of revolution question which was a double parts thing and
    x=1 to x=1/3
    y=(ln3x)/x
    For which I got something like pi (-(ln3x) ^2+2ln3+4) I can't remember exactly but it was ugly

    Finding range we had to differentiate to get maximum point

    Then we had to show secx+tanx=-0. 2 given that secx-tanx=-5, my friends had problem with it and it was 2 marks but I took half a page to work it out!
    I get the same as you for the volume. For the trig, it's just difference of two squares.


    [/latex]
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    How does clearing work again????????????????
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    Horrible paper I'm crying now
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    (Original post by RUNSran)
    cosx was -2/5.2
    same thing bro
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    (Original post by bartbarrow)
    I sat the test today and took a look at the past grade boundaries / 100 UMS. I reckon the grade boundaries will be something along the lines of

    100 UMS - 70 (maybe 69)
    A* - 63
    A - 58
    B - 51
    C - 46
    D - 41
    E - 36
    Looks accurate
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    what the actual **** was that paper, AQA really like to screw us over
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    That was the most horrific thing in the world!
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    On the integration by parts of ln(3x)/x multiplied by something or whatever it was, i got the integration by parts..... but then with the rotating around an axis... how did people make the numerator ln(3x) because it was squared???
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    so it looks like I know what I'll be doing next year...
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    (Original post by C0balt)
    Answers I remember

    Area of OAB= (e^2+1)^2/e^3
    Volume=pi(-(ln3)^2 + 2ln3 + 4)
    p root q=-root5

    Range f(x) =<24ln2 - 8 (iirc)
    gg(x) =x

    Some *****y fraction somebody Posted for substitution


    Attached for show that secx+tanx=0.2

    Posted from TSR Mobile
    easier way to do it is say sec^x-tan^x=1 intput this into the -5 then simplifi
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    That was worse than conceding a 90th minute goal on Fifa .
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    This exam has made me very angry at people who have:

    A) Extra time
    B) Unconditionals
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    (Original post by C0balt)
    I think I got everything right if I didn't make any silly mistakes.
    But there was solid of revolution question which was a double parts thing and
    x=1 to x=1/3
    y=(ln3x)/x
    Could be worse. They could have given you y = (ln x)/x and asked you to prove e^pi > pi^e or something.
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    Is it bad that I found that paper harder than i found all my FP modules last year?
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    I think AQA are getting all the trickier questions or of their system before th new spec comes into play.
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    (Original post by Jm098)
    177/224
    I got that as well
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    I ended up with x>6 and x<-1 or something like that, anyone else?
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    What about the mod question? I had like -6,1,2 and 4 as the intersections or something? I can't really remember
 
 
 
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