a. {6, 7, 8, 9} c. {8, 6, 4, 2}
b. {8, 7, 6, 4} d. {8, 7, 6, 5}
4. Suatu fungsi didefinisikan f(x) = 7 – dengan x {-2, 0, 2, 4}. Daerah hasil fungsi tersebut adalah ….
Jawab:
f(-2)
f(-2) = 7 – 1/2 × -2
f(-2) = 7 – (-1)
f(-2) = 8
f(0)
f(0) = 7 – 1/2 × 0
f(0) = 7-0
f(0) = 7
f(2)
f(2) = 7 – 1/2 × 2
f(2) = 7 – 1
f(2) = 6
f(4)
f(4) = 7 – 1/2 × 4
f(4) = 7 – 2
f(4) = 5
Daerah hasil fungsi= (8,7,6,5)
Penjelasan dengan langkah-langkah: