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edexcel C2 23rd May 2018 unofficial mark scheme Watch

shivalakhani
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#1
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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Jpettigrew
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#2
(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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sportyegg
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#3
Isn’t 3(d) 24x^2, not 29x^2?
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Tojsagay
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#4
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#4
8ii) Isn’t 6.03 another value?
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shivalakhani
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#5
(Original post by sportyegg)
Isn’t 3(d) 24x^2, not 29x^2?
IT IS
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sportyegg
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(Original post by shivalakhani)
IT IS
Haha I see those sly movements
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shivalakhani
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#7
(Original post by Tojsagay)
8ii) Isn’t 6.03 another value?
No as its less than 2pi
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sdcvbvn
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#8
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#8
According to JAY PATEL SEM your wrong
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sdcvbvn
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#9
(Original post by gymcattaylah)
I got all the same!!
you're wrong NOOB
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shivalakhani
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#10
(Original post by sdcvbvn)
According to JAY PATEL SEM your wrong
YOU'RE
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SilentStudent.
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#11
I reckon grade boundaries will be high this year since apparently C1 and M3 were also easy papers
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sportyegg
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#12
Btw does anyone remember how many marks the binomial question was worth?
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sdcvbvn
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#13
(Original post by shivalakhani)
YOU'RE
According to JAYPATELSEM you're wrong
please follow petal
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SilentStudent.
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#14
(Original post by sportyegg)
Btw does anyone remember how many marks the binomial question was worth?
4 marks
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Eman0161
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#15
For the circle question can you leave the radius as Root 50?
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sportyegg
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#16
(Original post by SilentStudent.)
4 marks
Thanks! Was that including finding the value of k as well?
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SilentStudent.
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#17
(Original post by SilentStudent.)
4 marks
For expansion and I think 3 for the value of K
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shivalakhani
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#18
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#18
(Original post by sportyegg)
Btw does anyone remember how many marks the binomial question was worth?
7 marks
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sportyegg
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#19
(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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sportyegg
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#20
Cheers
(Original post by shivalakhani)
7 marks
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