Page 9 - PBD Plus Matematik Tambahan T4 (EG)

Matematik Tambahan Tingkatan 4 Bab 1 Fungsi

3. Tulis tatatanda fungsi bagi setiap hubungan berikut. TP 1
Write the function notation of each of the following relations.
Contoh
(a) x f(x) (b) f(x)
x f(x)
–2 ● –2 ● ● 1
1 ● ● 5 ● 5
0 ● 0 ●
2 ● ● 7 ● 9 ● 9
2 ● 2 ● ● 25
3 ● ● 9

f : x → 2x + 3 atau/or f : x → x + 5 atau/or f : x → (x + 3) atau/or
2
2
f(x) = 2x + 3
f(x) = x + 5 f(x) = (x + 3) 2
2

Cuba jawab Praktis SPM 1, K1: S5
Penerbitan Pelangi Sdn. Bhd.
SP 1.1.2 Menentukan domain dan julat bagi suatu fungsi.

4. Tentukan domain, kodomain dan julat bagi setiap fungsi berikut. TP 2
Determine the domain, codomain and range of each of the following functions.
Contoh
(i) x g(x) (ii) f(x) (iii) f(x)
r ● ● 5 6 7
● 6
s ● 4
● 7
t ● ● 8 2 2 x
0 3 5
x
–2 0 2 4
Domain = {r, s, t} Domain = {–2, 1, 2, 4} Domain ialah 0  x  5
Domain Domain Domain is
Kodomain = {5, 6, 7, 8} Kodomain = {2, 3, 4, 5} Kodomain ialah 2  f(x)  7
Codomain Codomain Codomain is
Julat = {5, 6, 8} Julat = {2, 3, 4, 5} Julat ialah 2  f(x)  7
Range Range Range is

Tip Penting
Graf ini fungsi selanjar.
This graph is a continuous function.

(a) (b) f(x) (c)
x g(x) f(x)
–1 ● ● –2 6 25
0 ● 21
● 0 4
1 ● 9
2
2 ● ● 10 0 x
x –4 2
–2 0 2 4
Domain = {–1, 0, 1, 2} Domain = {–2, –1, 1, 2, 4} Domain ialah −4  x  2
Domain Domain Domain is
Kodomain = {–2, 0, 10} Kodomain = {1, 3, 4, 6} Kodomain ialah 9  f(x)  25
Codomain Codomain Codomain is
Julat = {–2, 0} Julat = {1, 3, 4, 6} Julat ialah 9  f(x)  25
Range Range Range is

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