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    (Original post by drandy76)
    Doesn't 3 ii reduce to a quadratic? At least that's what it looks like from a glance


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    It reduces to cubic. you have quadratic in denominator of tanh(2x) and you have to multiply it to (1+6 tanh x)
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    (Original post by tangotangopapa2)
    It reduces to cubic. you have quadratic in denominator of tanh(2x) and you have to multiply it to (1+6 tanh x)
    Ah that's true


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    (Original post by drandy76)
    Doesn't 3 ii reduce to a quadratic? At least that's what it looks like from a glance


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    I feel dumb if it does, how so? Like the powers aren't all even so you can't let a=x^2 I don't think and solve it for a if that's what u mean

    I've got to go walk the dog haha
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    Any good links to questions/notes for Newson-Raphson, polar co-ords, and reduction formulae?

    Thanks in advance
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    (Original post by duncanjgraham)
    I feel dumb if it does, how so? Like the powers aren't all even so you can't let a=x^2 I don't think and solve it for a if that's what u mean

    I've got to go walk the dog haha
    Nah I just didn't think it through all the way, yous right


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    (Original post by duncanjgraham)
    june 2012 q 3ii and 8iii)
    I remember those now. The best thing to do is to buy a Casio fx-991ES calculator if you don't use one already. It can find the numerical solutions to cubics allowing you to get the roots easily.
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    (Original post by marioman)
    I remember those now. The best thing to do is to buy a Casio fx-991ES calculator if you don't use one already. It can find the numerical solutions to cubics allowing you to get the roots easily.
    bit late for that now
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    Doe anybody know whether or not one can sketch Polar coordinates with the fx 9750? If so, how?
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    (Original post by Pinley)
    Doe anybody know whether or not one can sketch Polar coordinates with the fx 9750? If so, how?
    On graph, press F3(type), then F2(r=), then just put in the equation.
    Make sure you change back to y= when you do any integration or differentiation (even for a polar equation) otherwise it'll give you something else.

    I don't know how anybody could survive without a graphing calculator in any A2 maths exam tbh.
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    Does anyone have the 2015 paper and ms? Not had a crack at it yet
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    (Original post by rich1334)
    Does anyone have the 2015 paper and ms? Not had a crack at it yet
    http://static1.squarespace.com/stati...+June+2015.pdf for past paper



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    (Original post by PotAuFeu)
    On graph, press F3(type), then F2(r=), then just put in the equation.
    Make sure you change back to y= when you do any integration or differentiation (even for a polar equation) otherwise it'll give you something else.

    I don't know how anybody could survive without a graphing calculator in any A2 maths exam tbh.
    Cheers! I have an fx991 so will use that for integration/differentiation if needs be. Thus far I've only used my graphic calculator in C3 but I think it might come into use tomorrow!
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    (Original post by rich1334)
    Does anyone have the 2015 paper and ms? Not had a crack at it yet
    2015 is quite brutal, someone in my class was determined to finish it in a mock, took him 3 hours...

    high boundaries too
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    (Original post by 16characterlimit)
    2015 is quite brutal, someone in my class was determined to finish it in a mock, took him 3 hours...

    high boundaries too
    Most of the questions were alright I thought, just a few parts early on such as 4(iii) and 5(ii) which are easy to lose time on by doing them via an inefficient method. January 2012 is probably one of the hardest past papers. That one was 49/72 for an A!
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    (Original post by marioman)
    Most of the questions were alright I thought, just a few parts early on such as 4(iii) and 5(ii) which are easy to lose time on by doing them via an inefficient method. January 2012 is probably one of the hardest past papers. That one was 49/72 for an A!
    Might just be me being weird but I actually got a fair few more marks on the Jan 12 paper than June 15


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    I still can't believe OCR organised the FP2 and physics G485 papers to be set one day after each other.
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    can anyone explain how to do 2015 5(iii) ? please ?
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    (Original post by uiui9090)
    can anyone explain how to do 2015 5(iii) ? please ?
    Differentiate the expression in part 5 ii not the actual functions they represent


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    (Original post by drandy76)
    Differentiate the expression in part 5 ii not the actual functions they represent


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    Do I have to Differentiate again ?
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    (Original post by PotAuFeu)
    I still can't believe OCR organised the FP2 and physics G485 papers to be set one day after each other.
    If it's any consolation, AQA have put physics PHYA5 on Tuesday too
 
 
 
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