Question

2) Determine A
B e AUB para:
a) A = {x€ R/-1<x<0}.
B = {x€ R/-2<x<5).
b) A = {xc R/ 3 < x < 6}.
B = {xcR/1 < x < 2).
c) A = {x€ R/5<x 57).
B = {xcR/75 x < 10}.​

Answer 1

Resposta:

a) A=]-1,0[

B=]-2,5[

AUB=]-2,5[

b) A=]3,6[

B=]1,2[

AUB=]1,2[ U ]3,6[

c) A=]5,57[

B=]-75,10[

AUB=]-75,57[

Explicação passo-a-passo:

a) A = {x∈ R/-1<x<0}.

B = {x∈ R/-2<x<5).

A=]-1,0[

B=]-2,5[

AUB=]-2,5[

b) A = {x∈ R/ 3 < x < 6}.

B = {x∈R/1 < x < 2).

A=]3,6[

B=]1,2[

AUB=]1,2[ U ]3,6[

c) A = {x∈ R/5<x 57).

B = {x∈R/-75< x < 10}.​ (tinha uns erros, acho que corrigi)

A=]5,57[

B=]-75,10[

AUB=]-75,57[