Question

6. Determinati a) {A} U (AB
b) [AB \ {A}
c) (AB U {B}
d) (AB \ {A}
9. Determinați a) (AB) U {A,B}
b) [AB] \ {A,B}
c) (AB) U [AB]
d) [AB] intersectat cu(AB)
e) (AB) \ [AB]
f) [AB] \ (AB)
Va rog ajutati-ma !

Answer 1

a) [AB
b)(AB
c) (AB
d) (AB
astea toate au fost semidrepte
 
9a) [AB]
b) (AB)
c) [AB]

d) (AB)
e) ∅
f){A; B} sau cu o notatie mai clara, {A}∪{B}