Question

2. Considere os conjuntos A = {x ∈ IN/ 0 < x < 8}, B = {x ∈ Z/ -3 < x < 5 } e C = {x ∈ Z / -5 < x < 0}.Encontre o conjunto K, tal que, K = (B – A) ∩ C

a) {3, 4, 5, 6}

b) {- 3, - 2, - 1}

c) {0, 1, 2}

d) {- 4, - 3, - 2, - 1, 0}​

Answer 1

Resposta:

d) {- 4, - 3, - 2, - 1, 0}​

Explicação passo-a-passo:

A = {x ∈ IN/ 0 < x < 8} A={1.2.3.4.5,6,7}

B = {x ∈ Z/ -3 < x < 5 } B={-2,-1,0,1,2,3,4}

C = {x ∈ Z / -5 < x < 0} C= {-4,-3,-2,-1}

K = (B – A) ∩ C

B-A={-2,-1,0}

{-2,-1,0}∩ C= {-4,-3,-2,-1}

{-4,-3,-2,-1,0}

d) {- 4, - 3, - 2, - 1, 0}​