Question

sejam A=]-2,2] e B=[1,3] determine AUB ​

Answer 1

Oi

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

[1,3] = {1,2,3}

Assim:

AUB = {-1,0,1,2,3}

Bons estudos! :)

Answer 2

Resposta:

$A~--\circ^{-2}===========\bullet^2----\\ B~----------\bullet^1======\bullet^3----\\ \\ A\bigcup B--\circ^2===============\bullet^3-----\\ \\ A\bigcup B=]2,3]$