Page 39 - FOCUS KSSM TG 4 MATEMATIK TAMBAHAN

Matematik Tambahan Tingkatan 4 Jawapan

9. (a) log y = (log 8)x – log k 3. (a)
1
10 10 10 — 0.589 0.500 0.417 0.278 0.238 0.192
(b) k = 0.01 x
12h 1
10. t = — 1.080 0.962 0.828 0.616 0.557 0.488
k y
Kertas 2 (b)
1
1
1. (a) x 1 2 3 4 5 6 – 1 y Graf – melawan –
y
x
x y 0.46 0.56 0.63 0.70 0.80 0.86 1.1
2
(b) 1.0
x y
2
0.9
1.0
Graf x y melawan x
2
0.8
0.9
0.7
0.8
0.6
0.7
0.5
0.6 0.4
0.5 0.3
0.4 0.2
0.39
0.1
0.3
1
–
0 0.1 0.2 0.3 0.4 0.5 0.6 x
0.2
(c) (i) p = 10 (ii) q = 15
0.1
4. (a)
1
1.95 x — 5.00 4.00 2.50 1.25 1.00
x
0 1 2 3 4 5 6
y 2 65.88 50.98 28.06 8.98 5.15
—
(c) (i) 0.037 x
(ii) 2.56
y
(iii) 0.205 (b) — 2
2. (a) x 2
y
1
log y Graf melawan —
—
10
x
Graf log y melawan (x – 3) 70 x
2.0 10
60
1.5
50
40
1.0
30
0.5
0.35 20
x – 3 10
–1 0 1 2 3
1
0 —
(b) (i) 2.239 1 2 3 4 5 x
(ii) p = 4.47, q = 2.01
–10

242