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SULIT 3472/2
SCHEME ANSWER OF PAPER 2
No. PERATURAN PEMARKAHAN MARKAH MARKAH PENUH
1 or
1
Substitute x or y in equation 2 or
1
or Solve quadratic equations by using a formula or completing the squareUsing a formula
1
By completing the squareOr 1
10
accept answer more than 2 d.p 1 5
2
(a) Equation of the tangent
(b) approximate change in y
1
1
1
1
1
or
1
16
3 or or or another valid method
1
1
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Compare:
1
1
1
2 7
4(a)
Interquartile range
6
5
4
3
2
1
numberofstudents
marks23.5 50.540.530.520.510.50.5
Score mode = *23.5
1
1
1
1
3
1 8
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No.PERATURAN PEMARKAHAN MARKAH MARKA
H PENUH
5
or another method
Shape of cosineAmplitude (maximum and minimum)ShiftedStraight line (gradient or y-intercept) for
or
Number of solutions = 4
1
1
1
1111
1 8
6(a) used formula
1
1
1
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(b) Used
(c)
1
1
1
17
7 0.30 0.48 0.60 0.70 0.79
0.54 0.68 0.77 0.86 0.92
Refer to the appendix 1
Minimum 1 point plotted correctly(Correct axes and uniform scales)5 *points are correct plottedLine of best fit (at least 3 points lies on the straight line and the other must be balance)
1
1
1
11
1
1 +111 10
8
(a)
(b) solve simultaneous equations
(c) area of shaded region
1
1
1
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(d) Volume of generated
1
1
1
1
1
1 10
9
(a)
Used formula a point dividing a segment of a line
(b) (i)
(ii) use area of triangle
1
1
1
1
1
1
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(c)
1
1
1
1 10
10(a) mean,
find
or using
or 0.99877
(b) use
or
or
Solve simultaneous equation (until 1 variable left)
11
1
Or 1
1 or 1
1 or
11
1
111
10
No. PERATURAN PEMARKAHAN MARKAH MARKAH PENUH
11(a)
Used trigonometric ratios
1
1
2
(b) Used Pythagoras Theorem to find OR
Used trigonometric ratios to find
1
Or 1Or 1
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Perimeter of shaded region
Or 1
1
14
(c) Area of sector PRS
Area of sector QOR
Area of triangle OPR
Area of shaded region
1
Or 1
Or 1
1
1 4
Total marks 1012 (a) Used sine rule
(b) Used cosine rule
(c) Used sine rule or cosine rule
1
1
1
11
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(d) Area of triangle PQR
Area of triangle PSR
Area of PQRS
=
1
1
1
Or
1
1
110
13
(b) Ingredient w Iw
A 150 36 5400B 120 72 8640C 200 108 21600D 130 144 18720
360 54360
(b) Used
(C)
(d)
3
1
1
1
1
1
1
1
10
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14
(a)
(b) Draw correctly at least one straight line*
Draw correctly all three straight lines R correctly shaded. Refer to appendix 2
(c)
The maximum fees collected is 28500
1
1
1
111
11
1 10
15 (a) (b)
(c)
(d)
At least two terms changes their index.
Stops instantaneously,
1
1
1
1
1
1
1
1
1
1
10
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Appendix 1Graph 7(a)
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Appendix 2Graph 14(b)
END OF SCHEME ANSWERSKEMA PEMARKAHAN TAMAT
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