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Untuk IxI = x
x + x + 1 < 2
2x < 1
x < 1/2..... (i)
Untuk IxI = -x
-x + ( -x - 1 ) < 2
-2x < 3
x > -3/2..... (ii)
Syarat nilai mutlak
- > x ≥ 0.....(iii)
x < 0......(iv)
-> x + 1 ≥ 0
x ≥ -1.......(v)
x < -1......( vi)
Irisan (i), (ii), (iii), (iv), (v), dan (vi)
-3/2 ≤ x < 1/2
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