Diketahui f(×)=2×-1 jika domain (1,2,3,) tentukan daerah asilnya

f(1) = 2.1-1 = 2-1 = 1
f(2) = 2.2-1 = 4-1 = 3
f(3) = 2.3-1 = 6-1 = 5
Semoga dapat membantu~