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    (Original post by ihatepeople37)
    You are an absolute hero... Total respect for you
    S'all good as long as you don't hate me Good luck!
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    Good luck everyone! I've just completely given up on trying to teach myself differential equations.
    So fingers crossed that we get no questions about them, haha.
    Just hoping for a couple of nice questions on Partial Fractions and Binomial Expansion, and get a D!
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    I hope the fact that I haven done all the past papers doesn't disadvantage me much


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    Damn I messed up my revision by doing too much bio! D: I want to get an A but I am messing up everywhere! T_T
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    I can't sleep.... This is bad
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    (Original post by ihatepeople37)
    I can't sleep.... This is bad
    join me on my attempt at an all nighter T_T I went into c3 with 4 hours revision. Found it pretty fine. I need at least 6 hours for C4. Only done like 3 :/
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    (Original post by Stickyelmo)
    join me on my attempt at an all nighter T_T I went into c3 with 4 hours revision. Found it pretty fine. I need at least 6 hours for C4. Only done like 3 :/
    That makes me feel a bit better knowing someone else is gonna be up for a while yet .... And if I can sleep I will cos I have done a fair bit of revising over the past week
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    (Original post by ihatepeople37)
    That makes me feel a bit better knowing someone else is gonna be up for a while yet .... And if I can sleep I will cos I have done a fair bit of revising over the past week


    I got a lil' question which shouldn't be too much but if you just learn what sin^2x is integrated into and cos^2x can I just put that down rather than going through all the steps? I make many many errors doing it via the steps
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    (Original post by Stickyelmo)


    I got a lil' question which shouldn't be too much but if you just learn what sin^2x is integrated into and cos^2x can I just put that down rather than going through all the steps? I make many many errors doing it via the steps
    Yeah I guess so if you can learn it well enough.... Might lose one method mark but might not as well
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    Two week ago I was getting As in this, after not touching it for 2 weeks I barely get Bs! :< Super sad
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    Do you really just use the chain rule to differentiate trig stuff? Thought its too easy
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    (Original post by Stickyelmo)
    Damn I messed up my revision by doing too much bio! D: I want to get an A but I am messing up everywhere! T_T
    Im in exact same position as you

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    Can anyone explain how to do question 6) on the January 2012 paper please? (http://ocr.org.uk/Images/79453-quest...hematics-4.pdf)
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    Still awake .... Oh god I'm gonna **** up tomorrow
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    (Original post by Pineapple.)
    Can anyone explain how to do question 6) on the January 2012 paper please? (http://ocr.org.uk/Images/79453-quest...hematics-4.pdf)
    Ah, if I remember it right, you have to do the volume of revolution of the sin graph and cos graph separately

    The sin graph will be rotated between the limits 0 and 1/4pi
    The cos graph will be rotated between the limits 1/4pi and 1/2 pi

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    (Original post by Namrah)
    Ah, if I remember it right, you have to do the volume of revolution of the sin graph and cos graph separately

    The sin graph will be rotated between the limits 0 and 1/4pi
    The cos graph will be rotated between the limits 1/4pi and 1/2 pi

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    And then you add the two I think to get the total area of R

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    I'm really stuck on u substitution. Thats messing everything up for me.

    How do I u subsitute:
    1/1+sqrt(X) and get 2+2ln(3/4)

    2:23AM and I get my first u subsitution like a fricken bawss! LEARN MORE!

    3:58AM what is a unit vector o.0

    6:37AM Had a 2 hours power nap then a quick shower. Hopefully I can remember what I "learnt" if anything at all
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    (Original post by Pineapple.)
    Can anyone explain how to do question 6) on the January 2012 paper please? (http://ocr.org.uk/Images/79453-quest...hematics-4.pdf)
    Does anyone know how to do Question 8 from the jan 2012 paper!!!! PLease
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    (Original post by master y)
    Does anyone know how to do Question 8 from the jan 2012 paper!!!! PLease
    where is thee stuck on it? http://www.ocr.org.uk/Images/135288-...ics-4-june.pdf Mark scheme is pretty straight forward. I'm not sure about part A because I keep getting a 1/3 :/
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    I dont know if this is the best thread I cant find any others about this exact exam, but here's the paper (sorry for the scribbles)

    Could someone get a mark scheme up or find Mr M??? I didnt think the paper was that bad, I need a C from it and Im confident I have that...

    But yeah, mark scheme anyone??

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