A) \[x\in \,\left[ 1,3 \right]\]
B) \[x\in \,(1,3)\]
C) \[x\in \,\left[ -1,3 \right)\]
D) \[x\in \,(-1,3)\]
Correct Answer: A
Solution :
[a] \[\left| x-2 \right|\le 1\] \[\Rightarrow -1\le x-2\le 1\] \[\Rightarrow 1\le x\le 3\] \[\Rightarrow x\in [1,3]\]
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