Question

Даны множества A=|o,n,p,c| и B=|p,c,t|.

Найти A*B, B*A, A\B, A*B⋂B*A, B∪(A\B).

Если кому не сложно можете решить?)

Answer 1

1) A*B = { o, n, p, c}*{p,c,t} = { (o; p), (o; c), (o; t), (n; p), (n; c), (n; t), (p; p), (p; c),
 (p; t), (c; p), (c; c), (c; t) }.
2) B*A = { p, c, t }*{o, n, p, c} = { (p; o), (p; n), (p; p), (p; c), (c; o), (c; n), (c; p), (c; c),
(t; o), (t; n), (t; p), (t; c) }.
3) A\B = {o,n}.
4) A*B ∩B*A = { (p; p), (p; c), (c; p), (c; c) }.
5) B U (A\B) = { p, c, t } U { o, n } = { p, c, t, o, n}.