Page 26 - PRAKTIS HEBAT ADDMATHS TG4

Additional Mathematics Form 4 Answers
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9. KL = 4u 36. ±0.9682
~
3(n – 6)
10. –7 37. m = ————
1
11. h = —, k = 2 n + 2
2 3m – 20
12. h = 1, k = 2 38. h = ———— –3i + 5j
14
~
~
→ → 39. (a) –3i + 5j (b) —–––—
13. (a) AD (b) DC ~ ~ ABB
34
→
(c) AD

14. (a) 3a + 5b (b) 6a – b PAPER 2

~
~
~
~
15. (a) –4a̰ + 8b ̰ (b) –a – 6b 1. (a) (i) 6x – 9y (ii) 2x + 6y

~
~
~
~
16 28 3 ~ 3 ~
16. —–x + —–y (b) m = , n =

5 ~ 5 ~ 8 4
(c) 3
3
1
17. (a) 3x – 2y (b) – —x – —y 2. (a) (i) a – 2b (ii) 1 (a – 6b)

~
2 ~
2 ~
~
18. (a) ABB 3ABB ~ ~ 4 ~ ~
13 units/ unit
37
(b) (i) r – q (ii) 3r – q (b) —––— units/ unit
~
4
~
~
~
→ 2 1
19. (a) OC = a + 2b (c) m = 5 , n = 10
~
~
(b) 3. (a) (i) 8ma + (5 – 5m)b (ii) (2 – 2n)a + 10nb ~
~
~
~
(b) m = 1 , n = 3 (c) 50 units/ unit
C 7 7 7
4. (a) (i) 3a + 4b (ii) 3a – 6b
A ~ ~ ~ ~
D a ~ (b) cannot be seen because S, R and Q are colinear
tidak dapat dilihat kerana S, R dan Q adalah
B segaris
b ~ O 5. (a) (i) q + 3 p (ii) p – q ~
~
2 ~
~
5 5 (b) (i) 3 mp + mq (ii) (n + 1)p – nq
20. (a) 3x + —y (b) —y – x ~ 2 ~ 2 ~ ~ ~
~
2 ~
2 ~
2
1 2 ~ ~
21. (a) 2 (b) 6i + 2j (c) m = 5 , n = – 5
8
→
→
6. (a) MN = (–4 + h)a + 5b , PQ = –2a – 12b ~
~
~
~
1 2 ~ ~ (b) 29
22. (a) 1 (b) 4i – j
–2
1 2 7. (a) – 3 ~ i – j ~ (b) —––— units/ unit
109
23. 12 6 10 ABBB
–4
3
–10i – 3j
24. 12i – 15 j (c) —–––––—
~
~
~
~
1 2
109
25. –13 ABBB
–35
~
~
~
26. 15 8. (a) (i) 9a + 8b (ii) 4a + 5b ~
1
27. (a) 4i + (1 + p) j (b) p = 2, p = –4 (b) 2
~
~
28. (a) (10, 4) (b) ABB 9. (a) 15 (b) x = 2, y = 4
82 units/ unit
5i + 3j –2i + 5j 10. (a) 8 y
~
~
~
~
29. (a) —–—— (b) —–––—
ABB ABB
29
34
4
–3i + 2j
~
~
30. —–––— c ~ a ~
ABB 2
13
→ 1
31. (a) SU (b) —(q – p) –2 O 2 4 6 x
5 ~ ~
32. (a) 17 units/ unit (b) –8 –2 b
→ → ~
5
–4
33. (a) OK = 1 2 , OL = 1 2 –4
3
4
(b) 9i – j ~ –7i + 12j –9i + 7j
~
~
~
2i + 3j
~
~
~
~
34. (a) 4i + 6j ~ (b) —–––— (b) (i) —–––––— (ii) —–––––—
ABBB
ABBB
130
193
~
ABB
13
20i – 37j
i – j
~
1 2 AB 2 ABBBB
~
~
~
35. (a) 14 (b) —––— (iii) —–––––—
1769
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