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Chapter 1 Functions/ Bab 1 Fungsi Paper 1 (80 Marks)/ Kertas 1(80 Markah)
1.
A = {2, 4, 6, 8} B = {2, 8, 12}
Based on the information above, the relation of A to B is defined by the ordered pairs {(2,2), (2,8), (4,2), (6,8), (8,2), (8,8)}. Berdasarkan maklumat di atas, hubungan antara A dan B ditakrifkan sebagai hubungan bertertib {(2,2), (2,8), (4,2), (6,8), (8,2), (8,8)}.
State Nyatakan (a) the images of 2, imej bagi 2, (b) the objects of 8. objek bagi 8.
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[1 m] [1 m]
2.
p
1
q
2
r
3 4 4
The diagram above shows the relation between set A and set B.
q
Rajah di atas menunjukkan hubungan antara set A dan set B. State Nyatakan (a) the range of the relation, julat hubungan itu,
[1 m]
(b) the type of the relation. Jenis hubungan itu.
[1 m]
3. Given π: π₯ Diberi π: π₯
β
β
2π₯+3 π₯+3
.
2π₯+3 π₯+3
.
(a) State the value of x such that the function cannot be defined. Nyatakan nilai bagi x jika fungsi tersebut tidak boleh diberi definisi.
[1 m]
(b) Find the value of x such that π(π₯) = 5. Cari nilai x dengan keadaan π (π₯) = 5.
[1 m]
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X
y
4. -2 --
-- 0
-1 --
-- 1
0 --
-- 2
1 --
-- 3
The diagram above shows the relation between x and y. Rajah di atas menunjukkan hubungan antara x dan y. (a) Write the relation between x and y in words. Tulis hubungan antara x dan y dalam sebutan ayat.
[1 m]
(b) Write the relation in ordered pairs. Tulis hubungan tersebut sebagai hubungan bertertib.
[1 m]
5. The function π is defined by π: π₯ β π₯ 2 . Fungsi π ditakrifkan sebagai π: π₯ β π₯ 2 . (a) Find the range of values of π for the domain β1 β€ π₯ β€ 4. Cari julat nilai π bagi domain β1 β€ π₯ β€ 4.
[1 m]
(b) Determine another domain for π to have the same range. Tentukan domain yang lain bagi fungsi π untuk julat yang sama.
[1 m]
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6. The function π is defined by π: π₯
1
β π₯ 2 β 1. 2
1
β π₯ 2 β 1.
Diberi fungsi π bahawa π: π₯
2
Find Cari (a) π(β4)
[1 m]
(b) the possible values of π₯ such that π(π₯) = π₯ β 1. nilai-nilai π₯ yang mungkin supaya π(π₯) = π₯ β 1
7. Given that π(π₯)
β
πβπ₯ 1+π₯
and π β1 : π₯
β
2βπ₯ π₯+π
[2 m]
, where a and b are constants, find the values of
a and b. Diberi bahawa π(π₯)
β
πβπ₯ 1+π₯
dan π β1 : π₯
β
2βπ₯
, dengan keadaan a dan b adalah pemalar, cari
π₯+π
nilai a dan b. [3 m]
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8. If π: π₯ β 5π₯ β 2 and π: π₯ β π₯ + 1, find Diberi fungsi π: π₯ β 5π₯ β 2 dan π: π₯ β π₯ + 1, cari
(a) ππ(3)
[1 m]
(b) π 2 (β1)
[1 m]
(c) the possible values of π₯ such that ππ(π₯) = 8π₯. nilai- nilai π₯ yang mungkin supaya ππ(π₯) = 8π₯.
[1 m]
9. Given π: π₯ β π₯ + 2 and β: π₯ β 2π₯ β 3. Diberi π: π₯ β π₯ + 2 dan β: π₯ β 2π₯ β 3. (a) Find the value of Cari nilai (i) βπ(1)
[1 m]
(ii) πβ(β1)
[1 m]
(b) Determine whether πβ = βπ. Tentukan sama ada πβ = βπ.
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[1 m]
10. Given β: π₯ β π₯ + 2 and πβ: π₯ β π₯ 2 + 4π₯ + 5. Find the function π. Diberi β: π₯ β π₯ + 2 dan πβ: π₯ β π₯ 2 + 4π₯ + 5. Cari fungsi π.
11. The function π is defined by π: π₯ β
Fungsi π ditakrifkan sebagai π: π₯ β
[3 m]
2π₯+3 π₯β2
, π₯ β 2.
2π₯+3 π₯β2
, π₯ β 2.
(a) Find π 2 (π₯). Cari nilai π 2 (π₯).
[2 m]
(b) Hence, find π 3 (π₯). Cari nilai π 3 (π₯).
[1 m]
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12. Given β: π₯ β ππ₯ + π, β(1) = 2 and β(2) = β2. Find the possible values of Diberi β: π₯ β ππ₯ + π, β(1) = 2 dan β(2) = β2. Cari nilai-nilai yang mungkin bagi (a) π and π, a dan b,
[3 m]
(b) β 2 (3).
[1 m]
13. Functions π and π are defined by π: π₯ β 2π₯ β 5 and π: π₯ β π β ππ₯. Given that ππ: π₯ β 1 β 2π₯, Find Fungsi π dan π diberi sebagai π: π₯ β 2π₯ β 5 dan π: π₯ β π β ππ₯. Diberi ππ: π₯ β 1 β 2π₯, cari (a) The values of π and π, nilai bagi a dan b,
[2 m]
(b) The value of π₯ such that ππ(π₯) = π₯. Nilai x jika ππ(π₯) = π₯.
[1 m]
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14. Given that π: π₯ β 3π₯ + 5 and β: π₯ β 2 β 3π₯ 2 , find Diberi π: π₯ β 3π₯ + 5 dan β: π₯ β 2 β 3π₯ 2 ,cari (a) πβ1 (8),
[2 m]
(b)βπβ1 (8).
[1 m]
3
15. Given that π β1 : π₯ β 2π₯ + π and π: π₯ β ππ₯ β 2, find the values of π and π. 3
Diberi π β1 : π₯ β 2π₯ + π dan π: π₯ β ππ₯ β , cari nilai bagi b dan k. 2
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[3 m]
16.
π₯
π₯2 β π
P
5
-3 The diagram above shows a function π: π₯ β π₯ 2 β π, where π is a constant. Rajah di atas menunjukkan fungsi π: π₯ β π₯ 2 β π, π adalah pemalar. (a) Find the value of π. Cari nilai π. (b) By using the value of π in (a), find the value π. Dengan menggunakan nilai π di (a), cari nilai π.
17. If π: π₯
β
π₯+π π₯+π
[2 m] [2 m]
1
,where π and π are constants, π(4) = 6 and π(β1) = β , find
π₯+π
4
1
Diberi π: π₯ β π₯+π,di mana π dan π adalah pemalar, π(4) = 6 dan π (β1) = β 4,cari (a) the values of π and π, nilai bagi π dan π, (b) π β1 and the value of π₯ for which π β1 is undefined. π β1 dan nilai bagi π₯ di mana π β1 tidak ditentukan.
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[3 m] [2 m]
π
18. A function π is defined by π: π₯ β π₯ + 2 for all values of π₯ except π₯ = β and π is a constant. π
Fungsi π diberi sebagai π: π₯ β π₯ + 2 bagi semua nilai π₯ kecuali π₯ = β dan nilai π adalah pemalar. (a) State the value of β. Nyatakan nilai β. (b) Given that the value of 3 maps itself under π, find Jika nilai 3 dipetakan di bawah fungsi π, cari (i) the value of π, nilai π, (ii) the value of π β1 (β1). Nilai π β1 (β1).
19. Given that π: π₯ β ππ₯ + π, π > 0 and π β1 π β1 : π₯ β Diberi π: π₯ β ππ₯ + π, π > 0 dan π β1 π β1 : π₯ β
π₯+25 16
[1 m]
[1 m] [1 m]
π₯+25 16
, find
, cari
(a) the values of π and π, nilai bagi π dan π,
[2 m]
(b) (π β1 )2 (7).
[2 m]
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20. Given the function π β1 = Diberi fungsi π β1 =
π₯+5 2
π₯+5 2
and π(π₯) = 3π₯ + 8, find
dan π(π₯) = 3π₯ + 8, cari
(a) π(π₯), (b) The value of π such that π(2π) = π β1 (3). Nilai π dengan keadaan π(2π) = π β1 (3).
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[2 m] [2 m]
21. Diagram shows the graph of the function π(π₯) = |4π₯ β 5|, for the domain 0 β€ π₯ β€ 4. Rajah menunjukkan graf bagi fungsi π (π₯) = |4π₯ β 5|, untuk domain 0 β€ π₯ β€ 4. π(π₯)
0
v
4
π₯
State Nyatakan (a) The value of v, Nilai bagi v, (b) The range of π(π₯)corresponding to the given domain. Julat bagi π(π₯) sepadan dengan domain yang diberi.
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[2 m] [2 m]
22. Given the function π: π₯ β 3π₯ β 2 and ππ: π₯ β 3π₯ 2 + 4, find Diberi fungsi π: π₯ β 3π₯ β 2 dan ππ: π₯ β 3π₯ 2 + 4, cari (a) πβ1 (π₯), (b) π(π₯).
[2 m] [2 m]
23. Given the function π (π₯ ) = Diberi fungsi π (π₯ ) =
1 2π₯
1 2π₯
, π₯ β 0 and the composite function ππ(π₯) = 4π₯, find
, π₯ β 0 dan fungsi gubahan ππ(π₯) = 4π₯, cari
(a) π(π₯), in terms of π, π(π₯),dalam sebutan π, (b) The value of π₯ when ππ (π₯) = 2. Nilai π₯ apabila ππ (π₯) = 2.
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[2 m] [2 m]
24. Given function π(π₯) = π₯ + 1. Find function π if ππ(π₯) = π₯ 2 + 3π₯ + 5. Diberi fungsi π(π₯) = π₯ + 1. Cari fungsi π jika ππ(π₯) = π₯ 2 + 3π₯ + 5.
[4 m]
25. Given the function π: π₯ β 3π₯ β 4, find Diberi fungsi π: π₯ β 3π₯ β 4, cari (a) π β1 (π₯), (b) The value of π such that π β1 (2π β 1) = π. nilai π dengan keadaan π β1 (2π β 1) = π.
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[1 m] [2 m]
Paper 2 (Section A) / Kertas 2 (Bahagian B) 1. Sketch the graph π (π₯) = |3 β 2π₯| for 0 β€ π₯ β€ 3. Determine the range of values of π in the given domain. Lakarkan graf bagi fungsi π (π₯) = |3 β 2π₯| untuk 0 β€ π₯ β€ 3. Tentukan julat bagi πsepadan dengan domain yang diberi. [2 m]
12
π
2. Given that the function π: π₯ β ππ₯+π, π₯ β β π such that π (0) = β3 and π(2) = β6, find Diberi fungsi π: π₯ β
12 ππ₯+π
π
, π₯ β β di mana π (0) = β3 dan π (2) = β6, cari π
(a) the values of π and π, nilai bagi π dan π,
[2 m]
(b) π 2 (5),
[1 m]
(c) the value of π₯ for which π 2 (π₯) = 1. Nilai bagi π₯ dengan keadaan π 2 (π₯) = 1.
3. The inverse π is defined by π β1 : π₯ β
3π₯+π
Fungsi songsang bagi π ialah π β1 : π₯ β
3π₯+π
π₯β1
π₯β1
[1 m]
, π₯ β 1. , π₯ β 1.
3
(a) Find the value of π if π β1 (2) = 5. 3
Cari nilai bagi π jika π β1 ( ) = 5. 2
(b) Find π(π₯). Cari π(π₯). (c) If 2π (π₯) = π₯, find the possible values of π₯. Jika 2π (π₯) = π₯,cari nilai yang mungkin bagi π₯.
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[1 m] [1 m] [1 m]
1
4. Functions π and π are defined by π: π₯ β π₯ , π₯ β 0 and π: π₯ β 5π₯ + 2 respectively. Find 1
Fungsi bagi π dan π diberi sebagai π: π₯ β π₯ , π₯ β 0 dan π: π₯ β 5π₯ + 2. Cari (a) (i) πβ1 π β1 ,
[3 m]
(ii) ππ and then , find (ππ)β1 ππ dan kemudian cari (ππ)β1 (b) Determine whether (ππ)β1 = πβ1 π β1 . Tentukan sama ada (ππ)β1 = πβ1 π β1 .
[2 m] [1 m]
5. Functions π and π are defined by π: π₯ β β2 β π₯ and π: π₯ β 2π₯ β 3. Fungsi π dan π diberi sebagai π: π₯ β β2 β π₯ dan π: π₯ β 2π₯ β 3. (a) Express the following in the same form. Cari yang berikut dalam ungkapan yang sama. (i) π β1
[2 m]
(ii) πβ1
[2 m]
6. Given that β β1 (π₯) = Diberi β β1 (π₯) =
1 πβπ₯
1 πβπ₯
, π₯ β π and π(π₯) = 3 + π₯, find
, π₯ β π dan π(π₯) = 3 + π₯, cari
(a) β(π₯) in terms of π, β(π₯) dalam ungkapan π, (b) the value of π if ββ β1 (π2 β 1) = π[(2 β π)2 ]. Nilai π jika ββ β1 (π2 β 1) = π[(2 β π)2 ].
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[2 m] [3 m]
(Section B) 40 marks/ (Bahagian B) 40 markah
1.
Set Q
2009β
6
2010β
5 4 3 2 1
1
2
3
4
5
Set P
The graph above shows the relation between set P and set Q. Graf di atas menunjukkan hubungan di antara set P dan set Q. (a) State the object of image 5. Nyatakan objek bagi imej 5.
[1 m]
(b) State the type of relation. Nyatakan jenis hubungan.
[1 m]
(c) Given function π: π₯ Diberi fungsi π: π₯
β
β
π₯ 2π₯+3 π₯
2π₯+3
,π₯ β β
,π₯ β β
3 2
3 2
and π: π₯ β π₯ + 4, find the value of ππ(5).
dan π: π₯ β π₯ + 4, cari nilai ππ(5).
[3 m]
2015β (d) Given function π: π₯ β ππ₯ β 1, π: π₯ β 4π₯ + 3 and ππ(π₯) = 4ππ₯ β β. Express π in terms of β. Diberi fungsi π: π₯ β ππ₯ β 1, π: π₯ β 4π₯ + 3 dan ππ(π₯) = 4ππ₯ β β. Ungkapkan k dalam sebutan h. [3 m] (e) Given π: π₯ β 3π₯ β 1 and ππ: π₯
π₯
β + 7. Find function π(π₯). 4
Diberi fungsi π: π₯ β 3π₯ β 1 dan ππ: π₯
π₯
β + 7. Cari fungsi π(π₯). 4
[2 m]
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2. Given the function π: π₯ β π₯ + 1 and π: π₯ β 2π₯ + 1, find
2009β
Diberi fungsi π: π₯ β π₯ + 1 dan π: π₯ β 2π₯ + 1, cari (a) ππ (π₯), [1 m] (b) The value of π₯ if ππ(π₯) = 7π₯ β 2 Nilai π₯ jika ππ (π₯) = 7π₯ β 2
[3 m]
(c) Given π: π₯ β π₯ β 2, find Diberi π: π₯ β π₯ β 2, cari (i) π 2 (π₯)
[1 m]
(ii)
π 3 (π₯),
Find π 30 (π₯).
[1 m] [1 m]
(d) The distance, in metres travelled by a particle in a straight line is given by π(π‘) = 6π‘ + 2π‘ 2 , with π‘ as time, in seconds after the particle started to move. Find Jarak, dalam meter , yang dilalui oleh sebuah zarah pada suatu landasan lurus ialah π(π‘) = 6π‘ + 2π‘ 2 , dengan t ialah masa, dalam saat, selepas zarah itu mula bergerak. Cari (i)
(ii)
The distance , in metres that was travelled by the particle in the first 2 seconds. Jarak, dalam meter, yang dilalui oleh zarah itu dalam 2 saat pertama [1 m] Time, in seconds, when the particle travels 8 metres Masa, dalam saat apabila zarah tersebut melalui 8 meter. [2 m]
3. Given π(π₯) = π₯ β 3 and ππ(π₯) = 4π₯ β 7, find Diberi π(π₯) = π₯ β 3 dan ππ(π₯) = 4π₯ β 7, cari (a) π(π₯) (b) ππ β1 (5) (c) π₯ if π β1 πβ1 (π₯) = 2π₯ β 9.
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[2 m] [3 m] [5 m]
4. (a) Given function π (π₯ )
π β1(π₯ ) =
β4π₯β3 π₯β2
Diberi fungsi π (π₯ )
=
ππ₯βπ π₯+4
, π₯ β β4 and the inverse function,
, π₯ β 2. Find the values of x so that π(π₯) = 3π₯.
=
ππ₯βπ π₯+4
, π₯ β β4 dan fungsi songsangannya, π β1 (π₯) = β4π₯β3 , π₯ β 2.Cari π₯β2
nilai-nilai x supaya π(π₯) = 3π₯. [7 m] (b) Given π: π₯ β |π₯ β 5| + 1, find the range of values of x such that π(π₯) < 8. Diberi fungsi π: π₯ β |π₯ β 5| + 1, cari julat nilai x supaya π (π₯) = 3π₯. [3 m]
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(Section C) 20 marks/ (Bahagian C) 20 markah π₯
1. Given that π: π₯ β 2π₯ β 1 and π: π₯ β 3 + 1. Find
2009β
π₯
Diberi π: π₯ β 2π₯ β 1 dan π: π₯ β + 1. Cari 3
(a) π β1 (π₯), [1 m] (b) π β1 π(π₯), [2 m] (c) β(π₯) such that βπ(π₯) = 3π₯ + 6. [3 m] β(π₯) di mana βπ(π₯) = 3π₯ + 6 (d) Given π: π₯ = |π₯ 2 β 4| and π(π₯) = 1. DIberi π: π₯ = |π₯ 2 β 4| dan π(π₯) = 1. (i) Sketch the graph π¦ = π(π₯) and graph π¦ = π(π₯) on the same axis for β4 β€ π₯ β€ 4. Lakarkan graf π¦ = π(π₯) dan graf π¦ = π(π₯) pada paksi yang sama untuk β4 β€ π₯ β€ 4. [3 m] (ii) From your graph, find the range of values of x so that |π₯ 2 β 4| < 0. Daripada graf anda, cari julat nilai x supaya |π₯ 2 β 4| < 0. [2 m] π₯
7
π₯
7
(e) Given π (π₯) = 2 + 2 and π(π₯) = |1 β 2π₯|. Diberi π(π₯) = 2 + 2 dan π(π₯) = |1 β 2π₯|. (i) Sketch graph π¦ = π(π₯) and graph π¦ = π(π₯) at same axis for the domain β3 β€ π₯ β€ 4. Lakarkan graf π¦ = π(π₯) dan graf π¦ = π(π₯) pada paksi yang sama untuk domain β3 β€ π₯ β€ 4. [3 m] π₯
7
2
2
(ii)From your graph, find the range of values π₯ that satisfies the condition + β₯ |1 β 2π₯|. π₯
7
2
2
Daripada graf anda, carikan julat nilai π₯ yang memenuhi syarat + β₯ |1 β 2π₯|. [3 m] (f) Given composite function π 2 (π₯) = 4π₯ + 9, find the possible function of π(π₯). Diberi fungsi gubahan π 2 (π₯) = 4π₯ + 9, cari fungsi f(x) yang mungkin. [3 m]
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π₯
2. Given β: π₯ β 4π₯ β 3 and π(π₯) = 1 β 2. π₯
Diberi β: π₯ β 4π₯ β 3 dan π(π₯) = 1 β . 2
(a) Find Cari (i) (ii)
β β1 π(2), βπβ1 (π₯) [4 m]
(b) Given πβ (π₯) = Diberi πβ(π₯) =
πβππ₯
, find the value of constants π and π.
2 πβππ₯ 2
, cari nilai bagi pemalar m dan n. [4 m]
(c) Sketch the graph π: π₯ β |2 β 3π₯| for β1 β€ π₯ β€ 4. Lakarkan graf π: π₯ β |2 β 3π₯| untuk β1 β€ π₯ β€ 4. (i) State the range that is suitable for 0 β€ π₯ β€ 4. [4 m] (ii)
Find the domain for 0 β€ π(π₯) β€ 5.
[2 m] (d) Given function π (π₯) = π₯ β 3 and function π(π₯) = ππ₯ β π. If ππ (π₯) = 2π₯ β 12π₯ + 13, find the value of a and b. Diberi fungsi π (π₯) = π₯ β 3 dan fungsi π(π₯) = ππ₯ 2 β π. Jika ππ(π₯) = 2π₯ 2 β 12π₯ + 13, cari nilai a dan nilai b. [6 m] 2
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2