︳x-1 ︳+︳ x+3︳﹥﹦6

来源：学生作业帮助网编辑：六六作业网时间：2024/11/29 23:07:53

︳x-1︳+︳x+3︳﹥﹦6︳x-1︳+︳x+3︳﹥﹦6︳x-1︳+︳x+3︳﹥﹦6当x≥1时|x-1|+|x+3|≥6；x-1+x+3≥6；2x+2≥6；x≥2当-3≤x≤1时|x-1|+|x+3|

︳x-1 ︳+︳ x+3︳﹥﹦6
︳x-1 ︳+︳ x+3︳﹥﹦6

︳x-1 ︳+︳ x+3︳﹥﹦6
当x≥1时
|x-1|+|x+3|≥6；x-1+x+3≥6；2x+2≥6；x≥2
当-3≤x≤1时
|x-1|+|x+3|≥6；1-x+x+3≥6；4≥6；无解
当x≤-3时
|x-1|+|x+3|≥6；1-x+(-x-3)≥6；-2x-2≥6；-2x≥8；x≤-4
解得x≥2或者x≤-4

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