Suatu fungsi didefinisikan sebagai f(x) = 2x + 3,jika daerah asal{x| -1≤ x ≤ 2,x € B},

f(x) = 2x + 3

Domain = {x| -1 ≤ x ≤ 2,x € B}

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

f(-1) = 2.(-1) + 3

= -2 + 3

= 1

f(0) = 2.0 + 3

= 0 + 3

= 3

f(1) = 2.1 + 3

= 2 + 3

= 5

f(2) = 2.2 + 3

= 4 + 3

= 7

Range = {1, 3, 5, 7}

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