Sendo A = { X E IN / X < 6 } , B = { X E Z / - 1 < X < 4 } + C = { X E Z - 3 < X < 5 } , determine ?
a : A U B U C
b : A ∩ B ∩ C
a : A U B U C
b : A ∩ B ∩ C
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Oi Lay,A = {5, 4, 3, 2, 1, 0}
B = {0, 1, 2, 3}
C = {- 2, - 1, 0, 1, 2, 3, 4}
=> A U B U C = {- 2, - 1, 0, 1, 2, 3, 4}
Ou,
=> A U B U C = {X E Z | - 3 < X < 5}
b)
=> A ∩ B ∩ C = {0, 1, 2, 3}
Ou,
=> A ∩ B ∩ C = {x E N | x < 4}