Question

Dados X={x ∈ IN | x≤7} e Y={y ∈ Z | y≥-4} determine o conjunto X∩Y

Answer 1

X = ( 0,1,2,3,5,6,7)
Y = ( -4,-3 ,-2,-1,0,1,2,3,4,5,6,7,8,...)

XΠY
( 0,1,2,3,4,5,6,7)