Question
Solve the following for $x$, where $|x|$ is modulus function, $[x]$ is the greatest integer function, $\{x\}$ is a fractional part function.$1<|x-1|<4$

Answer

$1<|x-1|<4$
$ \therefore-4<\mathrm{x}-1<-1 \text { or } 1<\mathrm{x}-1<4$
$\therefore-3<\mathrm{x}<0 \text { or } 2<\mathrm{x}<5$
$\therefore \text { Solution set }=(-3,0) \cup(2,5) $

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