Question

numerele intregi care verifica relatia -1<=x+1/3<1

Answer 1

-1≤x+1/3
-x≤1/3+1
-x≤(1+3)/3
-x≤4/3
-x≤4/3     inmultim-1
x≥-4/3
x∈[-4/3,+α)

x+1/3<1
x<1-1/3
x<(3-1)/3
x<2/3
x∈(-α,2/3)
deci x∈[-4/3,2/3)
nr.intregi care verifica relatia sunt:-1 si 0