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    this is regarding question 2 on this paper....in part (c) why havent they included the negative value for a by doing -2a-8=18, since the area scale factor is the modulus of the determinant, so the determinant and therefore a could have been negative

    http://www.edexcel.com/migrationdocu...athematics.pdf

    oh and in papers ive seen 'R^2 to R^2' written down in transformation questions, any idea what that means???

    thnx for the help
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    woah woah woah, sorry this isn't answering your questions but that paper just rang alarm bells...

    FP1 - matrix?? I didn't realise matrices were in the FP1 syllabus for edexcel?! It's definitely not in my Heinemann book (the chapters are inequalites, series, complex numbers, numerical solutions, first order diff, second order diff and polars).
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    I think this is the new FP1 syllabus? (the easy one :P)
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    (Original post by adz1991)
    I think this is the new FP1 syllabus? (the easy one :P)
    they dont ever have to integrate in the whole of fp1....:mad:
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    Unless I'm missing something out then yes the determinant being -9 instead of 9 is fine too (i.e. would create area 18) and I doubt you would get marks for showing both the solution for making the determinant 9, and the one for making the determinant -9.
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    (Original post by Red Alert)
    they dont ever have to integrate in the whole of fp1....:mad:
    Because the new FP1 is designed to be taken alongside C1 and C2, which only have basic calculus.
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    (Original post by adz1991)
    I think this is the new FP1 syllabus? (the easy one :P)
    :O bit harsh to say easy! im doing this one.... and granted its not as hard as the first fp1..... but im also doing fp2 for my as level and theyve made that harder...so it balances out!
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    (Original post by matt2k8)
    Unless I'm missing something out then yes the determinant being -9 instead of 9 is fine too (i.e. would create area 18) and I doubt you would get marks for showing both the solution for making the determinant 9, and the one for making the determinant -9.
    are you saying that there is no need to do both and just one would suffice...but how would i know in the exam whether to do both or not
 
 
 
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