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    (Original post by Leechayy)
    I'm sorry but I think I'll be taking that :rolleyes:

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    Really? Worse than 2/3?
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    Are there any predictions for the grade boundaries yet? (Specifically A, 90 and 100) People were pretty split in my college, so interested to see opinions.
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    1. (1.107, 4.094) [6]
    2. (3(2x-1)(4/3))/8 + c [4]
    3. u = 2x-1, (1/16)(64ln2 - 15) [5]
    4. r=h, 1/20pi = 0.0159 [5]
    5. gradient = ½ [6]
    6. i) x = ½ [2]
    ii) x = sqrt(2)/2 [2]
    7. i) f(f(x)) = x via substituting in. f-1(x) = f(x) = (1-x)/(1+x) [3]
    ii) g(x) is even since g(-x) = g(x). Symmetrical about the y-axis. [3]
    8. i) f'(x) = 1 - 4/x2, f''(x) = 8/x3which is less than zero when x=-1 and so Q is a maximum point. [7]
    ii) Area was 3 take away integral which gave something like...½(15-8ln4) [6]
    iii) f(x-1)-1=g(x) so g(x) = (x2-3x)/(x+1) [3]
    iv) This is the negative of the previous answer, and yes it's negative, because it asked for the value. [2]
    9. i) x = ln3 [2]
    ii) x = ln2, y = -1 [4]
    iii) The integral came out as negative, but this question asked for the area, so the given answer must be positive; 4 - 3ln3 [5]
    iv) f-1(x) = ln(sqrt(x+1)+2), with the domain as x >= -1 and range as y >= ln2. The sketch of the graph was a reflection in the line y = x, but subject to the 'new' domain and range (i.e. not below ln2). [7]

    Please quote me if I have made a mistake...
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    (Original post by Primus2x)
    True, luckily I wrote most of the answers twice to make sure, In question one I wrote the coordinates as expressions involving arctangents, exponentials and square roots as well as writing down the approximate decimal coodinates.
    Same, I was going to write them in hexadecimal and binary too, but I assumed I should have secured the marks by that point.
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    Also on (6) (ii) are they likely to accept a bare rt2 / 2 answer without any workings?
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    Unofficial Markscheme; http://www.thestudentroom.co.uk/show...7#post56935277
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    reckon i got 68-70 in this exam, but just found out i got 11 in my coursework. what do i need to get in C4 to get an A* and is there anything i can do about my coursework?
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    Does 70% in the paper and 95% coursework get an A overall?

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    (Original post by Harryp642)
    reckon i got 68-70 in this exam, but just found out i got 11 in my coursework. what do i need to get in C4 to get an A* and is there anything i can do about my coursework?
    ouch, is it even possible to get an a* with 11? if so it'll be risky

    it is probably going to be 66-ish for an A* on this paper, seeing as how it was easier than last year's
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    (Original post by Harryp642)
    reckon i got 68-70 in this exam, but just found out i got 11 in my coursework. what do i need to get in C4 to get an A* and is there anything i can do about my coursework?
    I am in exactly the same position as you, but I am in year 12 which does make a difference if you are in year 13.

    You need to get 90% UMS in C3 and C4 combined which includes the coursework and comprehension. I think with 81/90 in C3 you will be able to drop about 9 marks in C4 in order to get the 90%.

    If you just miss the mark, which is what will most likely happen to me, you can separately re-do the C3 coursework, and hold back your A2 exams for next year. If you are in year 13 then I don't you can affect your grade without doing another year.

    Nail C4 and you will be ok
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    17 in the coursework but from the unofficial mark scheme it looks like I dropped a few marks frequently from silly mistakes: looking at no more than about 58/72 and probably less. Hopefully enough for an A* but an A won't be the end of the world.
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    (Original post by Spelly456)
    For the differentiating implicitly I did the product rule on 2X times lny which gave 2lny + 2x/y Then I multiplied the whole thing by dy/dx as they both have y terms? I now think you only multiply the 2x/y term by dy/dx. Can anyone say whether this is wrong and how many marks I'll lose? My answer came out as 0.5...
    That is right.
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    (Original post by HenryHein)
    17 in the coursework but from the unofficial mark scheme it looks like I dropped a few marks frequently from silly mistakes: looking at no more than about 58/72 and probably less. Hopefully enough for an A* but an A won't be the end of the world.
    I'm in the same boat, RIP pal
    Although, 100% in C4 might just do it

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    (Original post by Spelly456)
    Are you sure about the method though? I multiplied dy/dx by both the y terms. 2lny and 2x/y? Thanks.
    Unless the examiner can clearly see that you got lucky in getting the right answer, you shouldn't lose marks.
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    How many marks was question 5?

    If I verified it passed through (1,1) how many marks would I get?

    If I got the wrong gradient would I still get marks for working out?


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    (Original post by Spelly456)
    Are you sure about the method though? I multiplied dy/dx by both the y terms. 2lny and 2x/y? Thanks.
    You should've only multiplied the 2x/y term by dy/dx but considering you got the right answer I doubt the examiner will notice unless they are looking for a correct expression for dy/dx. They want to mark it quickly so I think if they see a product rule set out with the correct final answer you might get lucky
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    worst c3 paper mei have given
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    no modulus inequalities or equations
    no exponential growth or decay questions
    no proof questions
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    (Original post by Buses)
    ouch, is it even possible to get an a* with 11? if so it'll be risky

    it is probably going to be 66-ish for an A* on this paper, seeing as how it was easier than last year's
    so i can drop 6/7 marks in C4? thats not the end of the world, if the paper isnt awful its possible
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    how is the coursework weighted? Is it just a simple matter of adding them together out of 90?

    I really ****ed this exam up, reckon I only got about 50/72 max, but got 16 in the course work. Need 215ums for an A this year, so don't mind getting a C in this provided I get an A in C4. So if all the past grade boundaries say 58/90 max is a C, will this mean I got at least a C if I got 42 or above in the paper?
 
 
 
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