D = {-2,-1,0,1,2,3} f(x)=x^2-1. Daerah hasil f adalah

f(x) = x^2 - 1

f(-2) = (-2)^2 - 1 = 3
f(-1) = (-1)^2 - 1 = 0
f(0) = 0^2 - 1 = -1
f(1) = 1^2 - 1 = 0
f(2) = 2^2 - 1 = 3
f(3) = 3^2 - 1 = 8

Daerah hasil = {3,0,-1,0,3,8}

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