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    (Original post by TeeEm)
    unusual vector question for those you can ...
    solution to the question I posted earlier
    Attached Images
  1. File Type: pdf Document1 solution.pdf (269.5 KB, 47 views)
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    (Original post by TeeEm)
    your modelling is wrong ... the volume of revolution formula you are using only works if you are revolving around the x axis.

    this is revolution about y=1

    either you derive a new formula from first principles or do like I did in the solutions
    Oh, I misread the question! :facepalm: thanks

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    (Original post by aersh8)
    Oh, I misread the question! :facepalm: thanks

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    Give it another go
    It is an extremely tough question without solutions.
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    (Original post by TeeEm)
    Give it another go
    It is an extremely tough question without solutions.
    Ok, I will

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    (Original post by TeeEm)
    unusual vector question for those you can ...
    have you got the file for the whole pack of vector questions ? jan 14 ial have also got a strange vector question
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    (Original post by anndz3007)
    have you got the file for the whole pack of vector questions ? jan 14 ial have also got a strange vector question
    I have seen them all ...

    Here is a vector file ... (Up to A2 level vectors only)

    http://madasmaths.com/archive/maths_...ons_part_a.pdf
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    One integral, three versions

    C4 Level, with limits (1)


    C4 Level, without limits (2)


    FP3 Level without limits (3)


    (solutions in about 1 hour)
    Attached Images
     
    Attached Images
  2. File Type: pdf INTEGRAL 1.pdf (14.1 KB, 45 views)
  3. File Type: pdf INTEGRAL 2.pdf (14.6 KB, 58 views)
  4. File Type: pdf INTEGRAL 3.pdf (17.9 KB, 51 views)
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    (Original post by TeeEm)
    One integral, three versions

    C4 Level, with limits (1)


    C4 Level, without limits (2)


    FP3 Level without limits (3)


    (solutions in about 1 hour)
    solution to post 327
    (fresh off the oven)
    Attached Images
  5. File Type: pdf INTEGRAL 1 solution.pdf (124.3 KB, 52 views)
  6. File Type: pdf INTEGRAL 2 solution.pdf (186.9 KB, 43 views)
  7. File Type: pdf INTEGRAL 3 solution.pdf (107.1 KB, 87 views)
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    (Original post by edothero)
    The questions you post sometimes make me contemplate whether I'm good enough to study Maths at Uni..
    (The vector question seems do-able though)
    I did not know you have applied for mathematics...
    Which Universities have you applied?
    Are you doing Further Maths?
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    (Original post by TeeEm)
    I did not know you have applied for mathematics...
    Which Universities have you applied?
    Are you doing Further Maths?
    Due to my school not being able to offer me A2 FM I wasn't able to apply to UCL or Imperial. As I wanted to stay in London my next best options were Kings and QMUL. I have Kings as firm atm and QMUL as insurance. Predicted A*A*ABa.
    Though I must say if I don't get into King's I'll probably retake (regardless of if QMUL take me or not), with FM A2 this time.

    I turned down University of Leeds and University of Surrey.
    Got rejected by University of Bristol.
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    (Original post by edothero)
    Due to my school not being able to offer me A2 FM I wasn't able to apply to UCL or Imperial. As I wanted to stay in London my next best options were Kings and QMUL. I have Kings as firm atm and QMUL as insurance. Predicted A*A*ABa.
    Though I must say if I don't get into King's I'll probably retake, with FM A2 this time.

    I turned down University of Leeds and University of Surrey.
    Got rejected by University of Bristol.

    I hope it works for you
    Many students of mine in recent years got into KCL for maths.
    My younger sister also did Maths at QMW in 1988.


    One of my former students (did straight maths, grade A* in 2010) would be going to KCL.

    He did a degree in "surveying" or something in Reading, did not enjoy it and thus he did not do well. He decided to do a Maths degree.
    He revisited his Maths and he just finished Further Maths.
    He got rejected from UCL, got unconditional from QMW, and needs A in Further maths for KCL.
    Almost certainly will be going there in September.
    His username here is Tiri
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    (Original post by TeeEm)
    X

    Will hopefully be using some of your undergrad resources next year

    How would you rate QMUL? I'm a bit undecided whether to retake and pick up A2 FM (as I finished AS FM this year) and push for UCL or go there?
    Not just in terms of University but life after University aswell. Job prospects etc..

    I've always been told to study something you like at university:yep:
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    (Original post by edothero)
    Will hopefully be using some of your undergrad resources next year

    How would you rate QMUL? I'm a bit undecided whether to retake and pick up A2 FM (as I finished AS FM this year) and push for UCL or go there?
    Not just in terms of University but life after University aswell. Job prospects etc..

    I've always been told to study something you like at university:yep:
    Hard to advice ...
    QMW is far better than the perceived opinion but fails to attract, mainly because the are is not attractive to students. I would not do Maths there because the course is very pure and stats.

    Kings is better, central and its reputation has risen in recent years.

    UCL, call me biased or whatever, is top.
    There are only 3 places I would personally pick instead of UCL and these are Cambridge, Oxford and Imperial.

    I would not go to Warwick even if you paid me.
    I laugh when I hear Bath or Durham...

    I guess everyone to their own...
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    (Original post by TeeEm)
    Hard to advice ...
    QMW is far better than the perceived opinion but fails to attract, mainly because the are is not attractive to students. I would not do Maths there because the course is very pure and stats.

    Kings is better, central and its reputation has risen in recent years.

    UCL, call me biased or whatever, is top.
    There are only 3 places I would personally pick instead of UCL and these are Cambridge, Oxford and Imperial.

    I would not go to Warwick even if you paid me.
    I laugh when I hear Bath or Durham...

    I guess everyone to their own...
    Very picky.
    I would say its either KCL or retake for me. Though I have not made my mind up yet.
    I'll leave the decision making for summer.
    C4 tomorrow:woo:
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    (Original post by edothero)
    Very picky.
    I would say its either KCL or retake for me. Though I have not made my mind up yet.
    I'll leave the decision making for summer.
    C4 tomorrow:woo:
    goodnight and goodluck
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    (Original post by TeeEm)
    goodnight and goodluck
    for 2x-4xdy/dx-4y+4ydy/dx=0 can I write that as dy/dx= (4y-2x)/(-4x+4y) Thanks
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    (Original post by games211)
    for 2x-4xdy/dx-4y+4ydy/dx=0 can i write that as dy/dx= (4y-2x)/(-4x+4y) thanks
    the expression you write is ambiguous.
    Use brackets please.
    As it is written there definitely not the same
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    (Original post by TeeEm)
    the expression you write is ambiguous.
    Use brackets please.
    As it is written there definitely not the same
    2X

    - 4Xdy/dx

    -4y

    +4ydy/dx

    =0

    sorry I don't know where to put the brackets
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    (Original post by games211)
    2X

    - 4Xdy/dx

    -4y

    +4ydy/dx

    =0

    sorry I don't know where to put the brackets
    (4y-4x)dy/dx = 4y-2x

    dy/dx = (4y-2x)/(4y-4x)

    dy/dx = (2y-x)/(2y-2x)
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    (Original post by TeeEm)
    (4y-4x)dy/dx = 4y-2x

    dy/dx = (4y-2x)/(4y-4x)

    dy/dx = (2y-x)/(2y-2x)
    Is my answer not accepted? THANK YOU
 
 
 
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