x belongs to r which satisfy the inequality |x|+|x+1|<2 find all x
1
Expert's answer
2012-04-06T07:26:37-0400
|x|+|x+1|<2 first we need to find zeroes of modules. It's x=0, x=-1Then we divide coordinate line into several segments where expressions under modules save sign and solve inequalities in each zone. So we have: 1. x<=-1 -x+(-x-1)<2 -2x<3 x>-3/2 so we have -3/2<x<=-1
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