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edexcel C2 23rd May 2018 unofficial mark scheme watch

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    1) (2,2) and (6,4rt2)
    b) r=51.413
    2) 128 + 448x +672k^2x^2 +560k^3x^3
    b) k=1.5
    3) proof
    b) a+b=21
    c) b=31 a=-10
    d) 24x^2 - 34x + 31
    4) Area = 8.75
    b) Flag area=20.02
    c) 26.79
    5) centre-(1,-7)
    b) r=5rt2
    c) y=0 and y=-14
    d) x+7y-2=0
    6) a=19000
    b) U5=12465.9
    c) S12=7176
    7) y=625056
    a) proof
    b) x=1/3
    8) x=248.6 , 331.4 (degrees)
    ii) theta= 0.258 , 2.89 , 3.48 , 5.94
    9) A(4,112)
    b) (25/4,0)
    c) r=79.77
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    (Original post by shivalakhani)
    1) (2,2) and (6,4rt2)
    b) r=51.413
    2) 128 + 448x +672k^2x^2 +560k^3x^3
    b) k=1.5
    3) proof
    b) a+b=21
    c) b=31 a=-10
    d) 29x^2 - 34x + 31
    4) Area = 8.75
    b) Flag area=20.02
    c) 26.79
    5) centre-(1,-7)
    b) r=5rt2
    c) y=0 and y=-14
    d) x+7y-2=0
    6) a=19000
    b) U5=12465.9
    c) S12=7176
    7) y=625056
    a) proof
    b) x=1/3
    8) x=248.6 , 331.4 (degrees)
    ii) theta= 0.258 , 2.89 , 3.48 , 5.94
    9) A(4,112)
    b) (25/4,0)
    c) r=79.77

    (btw I tutor even over Skype msg me for details)
    I got the same
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    Isn’t 3(d) 24x^2, not 29x^2?
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    8ii) Isn’t 6.03 another value?
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    (Original post by sportyegg)
    Isn’t 3(d) 24x^2, not 29x^2?
    IT IS
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    (Original post by shivalakhani)
    IT IS
    Haha I see those sly movements
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    (Original post by Tojsagay)
    8ii) Isn’t 6.03 another value?
    No as its less than 2pi
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    According to JAY PATEL SEM your wrong
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    (Original post by gymcattaylah)
    I got all the same!!
    you're wrong NOOB
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    (Original post by sdcvbvn)
    According to JAY PATEL SEM your wrong
    YOU'RE
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    I reckon grade boundaries will be high this year since apparently C1 and M3 were also easy papers
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    Btw does anyone remember how many marks the binomial question was worth?
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    (Original post by shivalakhani)
    YOU'RE
    According to JAYPATELSEM you're wrong
    please follow petal
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    (Original post by sportyegg)
    Btw does anyone remember how many marks the binomial question was worth?
    4 marks
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    For the circle question can you leave the radius as Root 50?
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    (Original post by SilentStudent.)
    4 marks
    Thanks! Was that including finding the value of k as well?
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    (Original post by SilentStudent.)
    4 marks
    For expansion and I think 3 for the value of K
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    (Original post by sportyegg)
    Btw does anyone remember how many marks the binomial question was worth?
    7 marks
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    (Original post by Eman0161)
    For the circle question can you leave the radius as Root 50?
    Yea
    (Original post by SilentStudent.)
    For expansion and I think 3 for the value of K
    Okay thanks
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    Cheers
    (Original post by shivalakhani)
    7 marks
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