Question

-2<(x)≤1

Answer 1

Ta có : $-2<x\leq 1$

\(=>x\in\left\{-1;0;1\right\}\)

Answer 2

x={0,1,-1}

Answer 3

Ta có :

Answer 4

Vì ta có: -2<(x)≤1
nên x ∈ \(\left\{-1,0,1\right\}\)