Question

Fie multimile: A={-5;3;3/4;0;2;-1,(8);2;0;-4}
B={x|x apartine(semnul) A,x apartineN}
C={x|x apartine A,x apartineZ}
D={x|x apartineA,x apartine Z,x nu apartineN}
Se se arate ca: a) A u intors N
b)BuD=C c)C\N=D d) A u intors Z=C
Va rog dau coroana!!​

Answer 1

Răspuns:

B={ 3, 0, 2}

C={-5, 3, 0, 2, -4}

D={-5, -4}

a) {3, 0, 2}

b) {3, 0, 2} u {-5, -4}= { -5, 3, 0, 2, -4}

c) { -5, 3, 0, 2, -4}\ N= {-5, -4}

d) A n Z= {-5, 3, 0, 2, -4}