Question

va rog ma ajutati. de la 2 pana la 5

Answer 1

pe 2 nu il stiu Π-este intersectat. u-este reunit. N*-en stelat
3. a) {2,0,1,3}Π{2,1,0,5}={0,1,2}
b){3,1,2}u{2,0,3}={0,1,2,3}
c){3,0,1,2}Π N*={0}
d){2,0,1,3} - N*={1,2,3}

4.A={a,b,c}
B={b,c}

5. A={0,2,4,6,8}
B={2,4}