Question

fie multimile A= {x€Z |x| mai mic sau egal cu 3} si B={x€Z|-5 mai mic x mai mic 1} Determinati AUB A intersectat cu B A\B B\A

Answer 1

|x|≤3 
-3≤x≤3
x∈{-3,-2,-1,0,1,2,3}=A
-5<x<1
x∈{-4,-3,-2,-1,0}=B
A∪B={-4,-3,-2,-1,0,1,2,3}
A∩B={-3,-2,-1,0}
A\B={-4}
B\A={1,2,3}