Question

se A = { x e N/ x ≤4} e B= { x e Z / -2 < x≤3} determine:
a) AUB
b) B-A

Answer 1

A={0,1,2,3,4}
B={-1,0,1,2,3}
AUB={-1,0,1,2,3,4}
B-A={-1}