Skema SET 2 Kertas 1
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Transcript of Skema SET 2 Kertas 1
3 7
3472/1
MARKING SCHEME FOR SET 2 KERTAS 1
No. MARKING SCHEME MARKS
1 (a) many to one 1
(b) {0, 1, 4} 1 2
2 p = 9 2
B12
3 3x2 + 7x 6 = 0 2
(x + 3)(3x – 2) = 0 or x2 ( 3 + ) + (3 ) = 0 B12
4 x < 3, x > 7 3
(x – 7)(x + 3) > 0 or
x2 4x 21 > 0 B1
3
5 p = 6t 3
h = B2
or B1
3
6 1·869 4
B3
2x lg3 – x lg5 = lg3 B2
(2x 1) lg3 = x lg5 B1
4
7 1 + p – q 4
B3
B2
B1
4
1
B2
3472/1
No. MARKING SCHEME MARKS874·94 3
82 2·342 B2
r = 8 or QOR = 2·342 rad B1
3
9 2 3
3 – 1 B2
10th value or 3 or 30th value B1
3
10y = x + 3 3
y – 3 = (x – 0) B2
m = or Q(0, 3) B1
3
11 2 , – 14 3 = 10 B2
6i + (k + 6)j B13
12 (a) k = 1 2
(4k + 1) (2k 3) = (5k + 6) (4k + 1) B1
(b) T8 = 41 1
3
2
3472/1
13(a) 1
(b) n = 11 3
1 =
= 255·875 B2
r = B1
4
No. MARKING SCHEME MARKS
14 5 3
(4) + B2 (for integration)
or B1
(B1 for separation but excluding the limits)
3
153
B2
B1
3
3
(using cos(A + B) formula)
3472/1
16 R (1, 5) 3
8x – 2 = 6 B2
= 8x – 2 or mtangent = 6 B1 3
17m = 15 and n = 6 4
m = 15 or n = 6 B3
3 = 4n + 27 or m = 4(3) + 27 B2
B1
4
18 4 4
= 10 B3 (for substitution and the equation)
or equivalent B2 (for integration and the limits)
A = B1 (ignore ve sign and the limits for B1)
4
No. MARKING SCHEME MARKS
193 (do not accept in decimal form)
B2 (accept cosec A)
B1 for cos A cos sin A sin
3
4
3472/1
20 (a) 1 2
8x – 8 = 0 B1
(b) 4 2
4(1)2 – 8(1) B1
4
21 (a) 5i + 3j 2
B1
(b) (–5, –3) 2
B1
4
22(a) 2
B1
(b) 1
3
No. MARKING SCHEME MARKS
23(a) = 1287 1
(b) 966 3
B2
One of the combination above B1
4
5
3472/1
24 n = 75 and p = 3
n = 75 or p = B2
np = 45 or np(1 – p) = (3 )2 B1
3
25 k = 2·525 3
P (Z > k) = 0·0058 B2
P (Z > 0·71) P(Z > k) = 0·7554 B13
6