Question

Fie multimea A = { x aprtine lui Z \ |2x-1| < sau egal 3 }
B= { x aprtine N*\ -1 Determinati A intersectat cu B

Answer 1

A={x∈Z| |2x-1|≤3}
|2x-1|≤3
-3≤2x-1≤3 
-2≤2x≤4
-1≤x≤2
x∈Z⇒x∈{-1,0,1,2}
A={-1,0,1,2}
A∩B={1,2}