Page 14 - E-Modul Relasi dan Fungsi Kelas X SMA
P. 14
E. LATIHAN
LATIHAN 2
1. Diberikan himpunan A = {1, 2, 3, 4, 5} dan himpunan B = {2, 3, 4, 5, 6, 8, 10, 11, 12}.
Nyatakanlah relasi A terhadap B dengan rumus berikut.
a) b = a + 1, a ∈ A dan b ∈ B.
b) b = 2a + 2, a ∈ A dan b ∈ B.
Kemudian periksa apakah relasi yang terbentuk adalah fungsi atau tidak, jelaskan!
2. Diketahui fungsi f (x ) = 8 dengan x ≠ 5. Tentukanlah
5−
a) f(1)
b) f(-3)
c) f(7)
d) Nilai x jika f(x) = 2
e) Nilai a, jika f(a) = 0,5
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