Possible Values of the Inequality.

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SUMMARY

The discussion centers on determining the possible values of the expression |2x−3| under the constraint 0<|x−1|<2. The analysis is divided into two cases: Case 1 yields the inequality -1<|2x-3|<3, while Case 2 leads to -5<|2x-3|<-1. Ultimately, the conclusion is that the valid range for |2x-3| is |2x-3|<3, as the condition -5<|2x-3|<-1 is invalid due to the properties of absolute values.

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Homework Statement



What are the possible values of |2x−3| when 0<|x−1|<2?

Homework Equations





The Attempt at a Solution



We know [itex]\left|x-1\right|[/itex] becomes x-1 if x-1≥0 and -(x-1) if x-1<0.
Now consider two cases.
Case 1:
0<x-1<2 [itex]\Rightarrow[/itex] 1<x<3 [itex]\Rightarrow[/itex] -1<2x-3<3.

Case 2:
0<-x+1<2 [itex]\Rightarrow[/itex] -1<x<1 [itex]\Rightarrow[/itex] -2<2x<2 [itex]\Rightarrow[/itex] -5<2x-3<-1.

Then the possible value include -1<|2x-3|<3 and -5<|2x-3|<-1.

Am I going about this problem correctly?
 
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NATURE.M said:
Then the possible value include -1<|2x-3|<3 and -5<|2x-3|<-1.

Saying -5< |2x-3| is not a particularly bold statement to make... take another look at the inequalities you got before you took the absolute value and think a bit harder about what they tell you about the absolute value.
 
Office_Shredder said:
Saying -5< |2x-3| is not a particularly bold statement to make... take another look at the inequalities you got before you took the absolute value and think a bit harder about what they tell you about the absolute value.

Then the possible solutions should probably just be |2x-3|<3, since no solution exists to the inequality -5<|2x-3|<-1 since |2x-3| is bounded by negative values.
Am I right?
 

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