Question
Mathematics Question on linear inequalities
If ∣x−1∣≤1, then
A
x∈[1,3]
B
x∈(1,3)
C
x∈[−1,3)
D
x∈(−1,3)
Answer
x∈[1,3]
Explanation
Solution
We have.
∣x−2∣≤1
⇒−1≤x−2≤1
⇒−1+2≤x−2+2≤1+2
⇒1≤x≤3
∴x∈[1,3]
Note Correction in the question
∣x−2∣≤1