Question

[x]=-2 chchvuvjvhffjv

Answer 1

x-1<[x]≤x

x-1<-2≤x

x-1<-2 => x<-1; x∈(-∞; -1)

-2≤x; x∈[-2; +∞)

(-∞; -1)∩ [-2; +∞)=[-2; -1)

x∈[-2;-1)