diketahui f(x) = 2x -5 dengan daerah asal (-2,-1,0,1,2) tentukanlah: bayangan dari daerah asal (-2,-1,0,1,2)

Jawab :

Domain = { -2 , -1 , 0 , 1 , 2 }

Dit = bayangan dari domain

f(x) = 2x - 5
f(-2) = 2(-2) - 5
= -4 -5
= -9

f(x) = 2x - 5
f(-1) = 2(-1) - 5 
= -2 - 5
= -7

f(x) = 2x - 5
f(0) = 2(0) - 5
= 0 -5
= -5

f(x) = 2x -5
f(1) = 2(1) - 5
= 2 - 5
= -3

f(x) = 2x -5
f(2) = 2(2) - 5
= 4 - 5
= -1