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    For d) and e) on question 9, I differentiated wrongly, so in turn got the wrong value for x. However, I did do other correct things in the method like set it equal to 0, then solve for x, then sub x, back into P to find a perimeter.
    Any idea how many marks I would get for that mistake?
    And then the last one, part e), I differentiated my first derivative correctly this time, and subbed x in and got the right conclusion - I assume I would still get 2 marks here?
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    How
    (Original post by AstarAstarA)
    Sorry. I hope you did fine on the rest of the questions though.
    How many marks would I lose if I didn't put it in radians form. But I got everything else right?
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    (Original post by TeeEm)
    Was there an optimization question?
    Yes. Last question
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    (Original post by NotNotBatman)
    I haven't got a mark scheme.
    where did you get that logs answer from then ?
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    (Original post by N^3)
    where did you get that logs answer from then ?
    Remembering the question.
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    (Original post by AstarAstarA)
    Yes. Last question
    tough I hope
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    How many marks in the last logs question?
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    (Original post by TeeEm)
    Was there an optimization question?
    Is that rates of change? If so, yes. It was very similar to the question in June 14 R. it was a quadrilateral triangle connected to a sector and a rectangle.
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    A 64 b 57 c 50 d 44 e 38


    grade boundaries
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    (Original post by FakeDumbledore)
    Unlucky mate I've seen the official mark scheme and a few of these are wrong :/
    Better luck next year in your resit...
    Looool😂, where's the unofficial Ms bro?
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    (Original post by NotNotBatman)
    Is that rates of change? If so, yes. It was very similar to the question in June 14 R. it was a quadrilateral triangle connected to a sector and a rectangle.
    Optimisation is finding the minimum value for a shape to work. It is optimising the shape's size
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    (Original post by AstarAstarA)
    Optimisation is finding the minimum value for a shape to work. It is optimising the shape's size
    Would I loose any marks for not putting it in radians..??
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    (Original post by TheRandomGenius)
    S= 24.3??
    I think that was for the intergration questions where you had to find the other x-coordinate and then find the area
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    (Original post by NotNotBatman)
    Is that rates of change? If so, yes. It was very similar to the question in June 14 R. it was a quadrilateral triangle connected to a sector and a rectangle.
    yes, applied differentiation, usually with shapes
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    (Original post by AstarAstarA)
    Geometric:
    b) 256
    c) 1.602

    Binomial:
    A = 16
    k = 7/2
    B = 936

    Integration:
    S = 24.3

    Trapezium:
    a) 7
    b) 20.75
    c) R = 5.75

    Factor theorem:
    a) 5
    c) (x + 2)(3x + 2)(2x - 1)

    Differentiation(Q10):
    a) 1/3PIx^2
    d) Minimum = 120m
    c) x = 16.63... => f''(x) = 0.437 > 0

    Trig identities:
    a) Theta = 8/15Pi , -2/15Pi
    b) x = 194.5, 345.5

    Circle:
    a) root(34)
    c) 3x + 5x - 95 = 0

    Log:
    i) (a - 5)/9
    ii) -2.19


    R u sure log was -2.19 because we divide -2.19 by 3 which will give us -0.73
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    (Original post by AstarAstarA)
    It's a troll. Leave them be otherwise they come back for more
    fair enough
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    (Original post by Amirshazad)
    R u sure log was -2.19 because we divide -2.19 by 3 which will give us -0.73
    Yeh it's about right, just put it in on your calc, that's what I did with my answer (-2.08) and it was really close to 0
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    (Original post by oinkk)
    For the binomial my friend and I got B = -1008?
    You had to do 1944-1008 or -1008+1944 to get B as 936.
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    How many marks was the 2nd logs question?
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    (Original post by Turtlebunny)
    For d) and e) on question 9, I differentiated wrongly, so in turn got the wrong value for x. However, I did do other correct things in the method like set it equal to 0, then solve for x, then sub x, back into P to find a perimeter.
    Any idea how many marks I would get for that mistake?
    And then the last one, part e), I differentiated my first derivative correctly this time, and subbed x in and got the right conclusion - I assume I would still get 2 marks here?
    It depends on where they allocate marks, if its A1 (answer) marks it has to be the correct answer so you would drop one mark on showing its a minimum but they coule put ECF. I imagine you will lose 2/3 marks on d) because 2/3 marks will be A1/2/3 marks, perhaps 2 for differentiation correctly and another for the correct final answer. If you are lucky you will drop 3 marks if not it could be 4/5
 
 
 
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