Wyznacz wzory AuB, A n B, A - B oraz B - A jeśli : a)A= {-2,-1,0,1,5}, B= {1,3,8} b)A= {1,2,3,4,5}, B= {5,4,3,2,1} c)A= {5,7,9,11}, B= {7,9}

a) A= {-2,-1,0,1,5}, B= {1,3,8} A u B = { -2,-1,0,1,3,5,8} A n B = {1} A - B = {-2,-1,0,5} B - A = {3,8} b) A= {1,2,3,4,5}, B= {5,4,3,2,1} A u B = {1,2,3,4,5} A n B = {1,2,3,4,5} A - B = Ø  (zbiór pusty) B - A = Ø  (zbiór pusty) c) A= {5,7,9,11}, B= {7,9} A u B = {5,7,9,11} A n B = {7,9} A - B = {5,11} B - A = Ø  (zbiór pusty)