Question

DAU COROANA!!! am nevoie urgent de acest exercitiu!!!​

Answer 1

2

a) A∪B={1,2,3,4,5}; A∪C={1,2,3,5,7};A∪D={1,2,3,5,6,8};B∪C={2,3,4,5,7};B∪A={1,2,3,4,5};D∪C={3,5,6,7,8};(A∪B)∪C={1,2,3,4,5,7};(A∪B)∪(A∪C)={1,2,3,4,5,7};B∪C∪D={2,3,4,5,6,7,8}

b) A∩B={2,3};A∩C={3,5};A∪D={1,2,3,5,6,8};B∩C={3};(A∪B)∩C={3,5};(A∩D)∪B={2,3,4};(A∩B)∪(B∩C)={2,3};(A∩B)∩(A∩C)={3}

c)A\B={1,5};B\A={4};A\C={1,2};C\A={7};C\B={5,7};A\D={1,2,3,5};(A\B)∩(C\B)={5}