👤
Marcolovna
a fost răspuns

Fie multimile a) A={x|x ∈ Z, |x|<9} si B= {x|x ∈ Z, -5< x-≤ 8}
Aflati: A U B , A ∩ B, A\B B/ A VA ROGG GGGG

Răspuns :

x<9
-x<9    inmultim -1
x>-9
-9<x<9
x∈(-9,9)
A={-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8}
B={-4,-3,-2,-1,0,1,2,3,4,5,6,7,8}
AUB={-8,-7........0,1,....8}
AintersectatB={-4,-3,-2,-1,0,1.......8}
A/B={-8,-7,-6,-5}
B/A=Ф

Alte intrebari