Solveeit Logo

Question

Mathematics Question on linear inequalities

If x11|x -1| \leq 1, then

A

x[1,3]x \in [1,3]

B

x(1,3)x \in (1,3)

C

x[1,3)x \in [-1,3)

D

x(1,3)x \in (-1,3)

Answer

x[1,3]x \in [1,3]

Explanation

Solution

We have.
x21|x-2| \leq 1
1x21\Rightarrow-1 \leq x-2 \leq 1
1+2x2+21+2\Rightarrow -1+2 \leq x-2+2 \leq 1+2
1x3\Rightarrow 1 \leq x \leq 3
x[1,3]\therefore x \in[1,3]
Note Correction in the question
x21|x-2| \leq 1