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AQA MPC2 (Core 2) Exam June 2012

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    Wtf was q2-9n vfupoisagbjh3lrgvpifes gbiu3hre[ogbfip[brehgi4pt5nwhb'k !
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    (Original post by Cath-ay)
    Would like the 'A' grade boundary to be 30/75
    I certainly hope so
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    First 6 were okay, 7 I forgot to root the 3 leaving me with +/- 3 then I saw the last 2 questions and wanted to stick my pen in my eyes.
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    (tanx+1)(sin2x-3cos2x) find the values of tan.. and hence solve.
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    was okay apart from the last question and i had no ideas how to do qeestion 8 ( make a quadratic equation to show only one root) ....did any 1 else get 222 cm sq fro are of the sector thingy and like 0.177 i think for trapezium rul? around dem values?
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    I just think the paper was ridiculous, even the find the area of the sector plus triangle bit was hard!!
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    (Original post by kitkat19)
    was okay apart from the last question and i had no ideas how to do qeestion 8 ( make a quadratic equation to show only one root) ....did any 1 else get 222 cm sq fro are of the sector thingy and like 0.177 i think for trapezium rul? around dem values?
    yup
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    You will probably only drop 1 mark for missing -root3, guessing you'll get error carried forward in the second part
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    (Original post by BRackett)
    (tanx+1)(sin2x-3cos2x) find the values of tan.. and hence solve.
     (tan \theta + 1)(sin^2 \theta - 3 cos^2\theta) = 0

    You will get two equations,
     tan \theta = -1 \ \ and \ \ sin^2 \theta -3 cos^2 \theta =0

    The second equation can be simplified,  sin^2 \theta -3 cos^2 \theta =0  \implies sin^2 \theta = 3 cos^2 \theta \implies tan^2 \theta = 3 \implies tan \theta = \pm \sqrt3
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    (Original post by Gillal)
    You will probably only drop 1 mark for missing -root3, guessing you'll get error carried forward in the second part
    hope so.. i can't see me dropping any more than 3 marks.

    what did people get for the 4 mark (yes 4 mark!!!) transformation question.. i got stretch in x direction SF 1/10
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    (Original post by Kev.1995)
    First 6 were okay, 7 I forgot to root the 3 leaving me with +/- 3 then I saw the last 2 questions and wanted to stick my pen in my eyes.
    I did this too lol
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    the exam was proper hard. the first few questions were ok but the last questions were really hard. seriously wats with the trig equation!! it was soo hard!!
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    (Original post by mulac1)
    hope so.. i can't see me dropping any more than 3 marks.

    what did people get for the 4 mark (yes 4 mark!!!) transformation question.. i got stretch in x direction SF 1/10
    I got stretch by scale factor 10 in the y-direction, but I think they might be equivalent?
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    (Original post by mulac1)
    hope so.. i can't see me dropping any more than 3 marks.

    what did people get for the 4 mark (yes 4 mark!!!) transformation question.. i got stretch in x direction SF 1/10
    i got stretch in x direction SF 1/(root 10) :confused:
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    (Original post by mulac1)
    hope so.. i can't see me dropping any more than 3 marks.

    what did people get for the 4 mark (yes 4 mark!!!) transformation question.. i got stretch in x direction SF 1/10
    me tooo yayyyyyyyy!!! .... basically...it was fine apart from the log crap...before the exam i was hoping there would be one est log question, but no they put 2 questions involving logs, totally ruining it for me

    EDIT: actually i think there was 3
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    Did anyone get log(1000/729) for the last question ???
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    (Original post by mulac1)
    hope so.. i can't see me dropping any more than 3 marks.

    what did people get for the 4 mark (yes 4 mark!!!) transformation question.. i got stretch in x direction SF 1/10

    iWhat was the question, i definitely didnt get this right, but i know exactly how to answer it only 4 marks i have dropped hopefully.
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    (Original post by louisjevans)
    Did anyone get log(1000/729) for the last question ???
    yup
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    Did anyone find the shaded area in the arc sector question? What I done was split the whole thing in half so that you get two right angled triangles, and then I worked out the area of that. Then I worked out the arc area, and took that away from the overall area.
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    (Original post by louisjevans)
    Did anyone get log(1000/729) for the last question ???
    yup

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