OCR MEI C2 MAY 18th

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  1. posting's Avatar
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    Re: OCR MEI C2 MAY 18th
    any got an unofficial ms yet?
  2. ScottENGLAND's Avatar
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    Re: OCR MEI C2 MAY 18th
    if anyone get a mark scheme please let me know!!!
  3. alex7892's Avatar
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    Re: OCR MEI C2 MAY 18th
    Could do with an unofficial mark scheme lool
  4. I_Am_The_Man's Avatar
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    Re: OCR MEI C2 MAY 18th
    (Original post by spatulagirl)
    haha yeah thats what i got!
    it was weird...
    I got something different as I think 3log(x) is not in terms of x. So I got:
    y=10^(3*10^x+ whatever c is)

    Maybe I am wrong someone correct me if I am
  5. BrightStar57's Avatar
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    Re: OCR MEI C2 MAY 18th
    how many mark would i get for the log question if i worote it like this

    y=10^(x^3+2)
  6. Axion's Avatar
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    • Location: Warwick
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    Re: OCR MEI C2 MAY 18th
    No! I didnt know the trapezium rule initial limits were 0 and 0!!

    How many marks would I lose
  7. Alotties's Avatar
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    • Location: Wolverhampton
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    Re: OCR MEI C2 MAY 18th
    I've definitely failed this one s:
    Ohwell, most of my class said it went badly so I won't be the only one resitting in Jan
  8. posting's Avatar
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    Re: OCR MEI C2 MAY 18th
    (Original post by BrightStar57)
    how many mark would i get for the log question if i worote it like this

    y=10^(x^3+2)
    I dont understand how a straight line can be x^3? Even in terms of x
  9. Alotties's Avatar
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    Re: OCR MEI C2 MAY 18th
    (Original post by Axion)
    No! I didnt know the trapezium rule initial limits were 0 and 0!!

    How many marks would I lose
    I'm not sure but I put one of the limits at 0 and the other as the last value before the 0 because it said something about 6 strips idk I got confused
    Hopefully you won't lose too many!
  10. Axion's Avatar
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    Re: OCR MEI C2 MAY 18th
    (Original post by Alotties)
    I'm not sure but I put one of the limits at 0 and the other as the last value before the 0 because it said something about 6 strips idk I got confused
    Hopefully you won't lose too many!
    and then i remember each part of that question were linked. :cry:
  11. RyanGibbard's Avatar
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    Re: OCR MEI C2 MAY 18th
    I thought it went OK but the more I've heard other people talk about answers, the worse I believe my mark is
  12. Alotties's Avatar
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    Re: OCR MEI C2 MAY 18th
    (Original post by Axion)
    and then i remember each part of that question were linked. :cry:
    I deffo hope we get ECF! I think we should

    (Original post by RyanGibbard)
    I thought it went OK but the more I've heard other people talk about answers, the worse I believe my mark is
    This always happens to me too! Hopefully we both did alright!
  13. ScottENGLAND's Avatar
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    Re: OCR MEI C2 MAY 18th
  14. Blazy's Avatar
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    Re: OCR MEI C2 MAY 18th
    Answer to Q6 (logging question), where you had (1,5) + (5,17)

    I'm guessing that was 100x^3? Seems right when I plug in the numbers. Gutted I didn't get that , plugged in Log(17) = nlog(5) + log(a) and Log(5) = nlog(1) + log(a). Not sure how many marks I'll lose here :/
  15. ss2012's Avatar
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    How did you work the last question out?

    This was posted from The Student Room's Android App on my GT-I9100
  16. Loulybob's Avatar
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    Re: OCR MEI C2 MAY 18th
    I'm feeling pretty confident on everything except the logs question, I did something weird and it made sense at the time but not now XD Did anyone else have trouble on the last part of the last question? It took me like 20 minutes but I eventually got it, but most other people I spoke to haven't and the ones who did do Further Maths like I do.

    Also, is it bad I found FP1 (which I also sat today, as well as ELEC2 D':) easier than C2? Or at least a lot more enjoyable XD
  17. posting's Avatar
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    Re: OCR MEI C2 MAY 18th
    any1 in the process of making an unofficial ms, really wana see it :P Thanks
  18. Blazy's Avatar
    • Exalted Member
    Re: OCR MEI C2 MAY 18th
    (Original post by ss2012)
    How did you work the last question out?

    This was posted from The Student Room's Android App on my GT-I9100
     10(0.6)^{n-1}:15(0.4)^{n-1}

     \displaystyle \frac{10}{15}:\frac{0.4^{n-1}}{0.6^{n-1}}

     \displaystyle \frac{10}{15}:\frac{0.4^{n-1}}{0.6^{n-1}}

     \displaystyle \frac{2}{3}:\left ( \frac{0.4}{0.6} \right )^{n-1}

     \displaystyle \frac{2}{3}:\left ( \frac{2}{3} \right )^{n-1}

     \displaystyle \frac{3^{n-1}}{3}:\frac{2^{n-1}}{2}

     \displaystyle (3^{-1})(3^{n-1}) : (2^{-1})(2^{n-1})

     \displaystyle  3^{n-2} : 2^{n-2} \boxed

    Need someone to check this. There's probably an easier way that I've missed out.
    Last edited by Blazy; 18-05-2012 at 16:29.
  19. top_cat_95's Avatar
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    • Posts: 132
    Re: OCR MEI C2 MAY 18th
    Please someone answer me I just realised I didn't put my calculator into radian mode when calculating the question on the sector. OCR wouldn't give my any marks for that then Im guessing and they'll mark me down for making that mistake? Im so annoyed with myself!
  20. ORogers's Avatar
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    Re: OCR MEI C2 MAY 18th
    Seeing as the sector area and arc lengths already deal in radians regardless, it shouldn't matter.

    Anyway, what was Q10 again? I'd just like to go through with myself and confirm something.
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