Did anyone can help me?

Diketahui =
Fungsi f = x ➡ x + 1
Daerah asal = {2,4,6,8}

Ditanya = daerah hasil ?

Jawab =
• f = 2 ➡ 2 + 1
= 3
• f = 4 ➡ 4 + 1
= 5
• f = 6 ➡ 6 +1
= 7
• f = 8 ➡ 8+1
= 9

jadi, daerah hasilnya adalah {3,5,7,9}