Question

Considere os seguintes intervalos
A= ]-3, 5[
B= ]-○○ , 8]
C= [-2, +○○ [
D= [ -1 , 6]

Resolva
A) AUB
B) BUC
C) CUD
D) A UD

Answer 1

A)AUB=[-3,5,-oo,8]

B)BUC=[-oo,8,-2,oo]

C)CUD=[-3,oo,-1,6]

D)AUD=[-3,5,-1,6]