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Markscheme for AS pure mathematics paper 1 set c
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it has answers for as pure mathematics paper 1 set c edexcel
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As level mathematics paper 1 (set c)
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2 hours AS level Mathematics Edexcel100 marks Paper 1 (Set C)
Q Answer Mark Comments
2
1 f x 12 x 2 M1 Attempts to differentiate f x with at
x2
least one term correct
f 1 14 M1 Evaluates f 1
1
Gradient of normal at x 1 is M1 Uses mtangent mnormal 1
14
A1
f 1 2 B1 f 1
1
y2 x 1 M1 Uses y y1 m x x1 or equivalent
14
x 14 y 29 A1 k = 29
2 2sin x sin x
3sin x M1 Uses tan x
cos x cos x
sin x 3cos x 2 0 M1 Deduces sin x 0 and solves
2
Either sin x 0 x 0 , 180 , 360 M1 Deduces cos x and solves
3
2
Or 3cos x 2 0 cos x
3
x 48.2 , 311.8 A1 At least two correct solutions
A1 Gives all solutions correct to
So in the interval 0 ≤ x ≤ 360°
x 0.0 , 48.2 , 180.0 , 311.8 , 360.0 one decimal place
© Oxford University Press 2017
Acknowledgements: www.oxfordsecondary.co.uk/acknowledgements AS level Mathematics Paper 1 (Set C)
, 3 AB : AC 2 : 3
C is the point 4 1, 1 2 5, 3 M1 A1 Finds the point C
BC 5 4 3 1 5 units
2 2
M1 Finds length in either coordinate units or
metres
OR OR
AB 4 2 1 3 2 5 units
2 2
M1 A1 Finds the distance AB
1
AB : AC 2 : 3 BC AB 5 M1 Finds length in either coordinate units
2 or metres
units
Each unit represents 2 m, and the cost is
£52 per metre, so A1 Accept £233 (nearest pound)
Total cost 5 2 52 £232.55
4 a 2, 3 B1
b x 2 2 4 y 32 9 7 0 M1 Completes the square on LHS
x 2 y 3 20 r 2 20
2 2
A1
Therefore, circle radius 20 A1
© Oxford University Press 2017
Acknowledgements: www.oxfordsecondary.co.uk/acknowledgements AS level Mathematics Paper 1 (Set C)
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