jawab soal diatas....
f(x) = 2x³-3x
domain = {-1,0,1}
masukkan domain ke fungsinya supaya dapat nilai range:
f(-1) = 2•(-1)³-3•(-1)
f(-1) = 2•(-1)+3
f(-1) = 1
f(0) = 2•0³-3•0
f(0) = 0
f(1) = 2•(1)³-3•(1)
f(1) = 2-3
f(1) = -1
jadi rangenya adalah {1,0,-1)
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