Question

Va roggg repedee da notaa
Ex 5 si 4

Answer 1

Răspuns:

Explicație pas cu pas:

4.

2x + 3 ≤ 9

2x ≤ 9 - 3

2x ≤ 6

x ≤ 3

x ∈ {0 , 1 , 2 , 3}

A = {0 , 1 , 2 , 3}

5.

a)

A = {2, 3, 4, 5, 6}

B = {0, 1, 2, 3, 4}

C = {0, 2, 4, 6, 8}

b)

A ∪ B = {2, 3, 4, 5, 6} ∪  {0, 1, 2, 3, 4} = {0, 1, 2, 3, 4, 5, 6}

A ∩ B = {2, 3, 4, 5, 6} ∩  {0, 1, 2, 3, 4} = {2, 3, 4}

A \ C = {2, 3, 4, 5, 6} \ {0, 2, 4, 6, 8} = {3 , 5}