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x = -1, 0, 1, 2
R = -3, -1, 1, 3
R = Daerah Hasil
R= {-1, 0, 1, 2}
Range :
2x - 1 = 2.-1 - 1 = -2 - 1 = -3
2x - 1 = 2.0 - 1 = -1
2x - 1 = 2.1 -1 = 2 - 1 = 1
2x -1 = 2.2 - 1 = 4 - 1 = 3