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edexcel C2 23rd May 2018 unofficial mark scheme
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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
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
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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)
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)
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sportyegg
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#3
Tojsagay
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#4
shivalakhani
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#5
sportyegg
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#6
shivalakhani
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#7
(Original post by Tojsagay)
8ii) Isn’t 6.03 another value?
8ii) Isn’t 6.03 another value?
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sdcvbvn
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#8
sdcvbvn
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#9
shivalakhani
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#10
(Original post by sdcvbvn)
According to JAY PATEL SEM your wrong
According to JAY PATEL SEM your wrong
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SilentStudent.
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#11
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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
sdcvbvn
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#13
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#13
(Original post by shivalakhani)
YOU'RE
YOU'RE
please follow petal
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SilentStudent.
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#14
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#14
(Original post by sportyegg)
Btw does anyone remember how many marks the binomial question was worth?
Btw does anyone remember how many marks the binomial question was worth?
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Eman0161
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#15
sportyegg
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#16
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#16
(Original post by SilentStudent.)
4 marks
4 marks
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SilentStudent.
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#17
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#17
(Original post by SilentStudent.)
4 marks
4 marks
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shivalakhani
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#18
(Original post by sportyegg)
Btw does anyone remember how many marks the binomial question was worth?
Btw does anyone remember how many marks the binomial question was worth?
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sportyegg
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#19
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#19
(Original post by Eman0161)
For the circle question can you leave the radius as Root 50?
For the circle question can you leave the radius as Root 50?
(Original post by SilentStudent.)
For expansion and I think 3 for the value of K
For expansion and I think 3 for the value of K
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sportyegg
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#20
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