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| 1. |
Write the solution set of the inequation |x - 1| ≥ |x - 3|. |
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Answer» |x – 1| ≥ |x – 3| Squaring both sides, |x – 1|2 ≥ |x – 3|2 (x – 1)2 ≥ (x – 3)2 x2 – 2x + 1 ≥ x2 – 6x + 9 4x – 8 ≥ 0 x ≥ 2 x ∈ [2, ∞) |
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