Question

4. Fie A = {x|XEN, x <5), B = {x|x EZ, -2 <x<3).
Determinati: AnB, AUB, B\A​

Answer 1

Răspuns:

Explicație pas cu pas:

x < 5 ⇒ x ∈ {0, 1, 2, 3, 4}

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

-2 < x < 3 ⇒ x ∈ {-1, 0, 1, 2}

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

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

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

B \ A = {-1, 0, 1, 2} \ {0, 1, 2, 3, 4} = {-1}

==pav38==