Question

A= {xϵR/-1< x < 3} e B= ] 1, 6], determine:

a) AUB

b) A∩B​

Answer 1

Resposta:

Determine A∪B, A∩B, A-B e B-A, dados:

a) A= { X e IR / -3 < x < 7 }

A = {- 3 < x < 7}

A = { -2,-1,0,1,2,3,4,5,6}

B= { X e IR / 2 ≤ x < 5 }

B = { 2 ≤ x < 5}

B = { 2,3,4}

AUB = { -2,-1,0,1,2,3,4,5,6}

A∩B = { 2,3,4}

A- B = { -2,-1,0,1,5,6}

B - A = { }

b) A= [-1,6 [ e B= ] 1, + ∞ [

A = { - 1,0,1,0,2,3,4,5,}

B = { 0,1,2,3,...}

AUB = { -1,2,3,4,5}

A∩B = { 0,1,2,3,4,5}

A - B = { -1}

B - A = { 0,1,2,3,4,5}