Дано: A={1,2,3,4,5,6,7,8}B={-1,0,1,2,3}C={3,2,1}D={1,2,3,5,0} найти 1) АСD, 2) (B/C)D, 3) (AB)/(DC), 4) (D/C)*A, 5)(AD)/СB

1) AC ={1,2,3} ACD={0,1,2,3,5} ------------------------------------ 2) BC= {-1,0} BCD={0} --------------------------------- 3) AB={-1,0,1,2,3,4,5,6,7,8} DC= {1,2,3} ( AB)(DC)={-1,0,4,5,6,7,8} ------------------------------------ 4) DC = {5,0} (DC)A={5} -------------------------------------- 5) AD={0,1,2,3,4,5,6,7,8} CB={1,2,3} (AD)(CB) = {0,4,5,6,7,8}