Resposta :
Resposta:
a)
A= {x E N/ x> = 5}
A = {6, 7, 8, ......} A∩B = {6} AUB = {0, 1, 2, ........}
B= {x E N/ x<7}
B = {0, 1, 2, 3, 4, 5, 6}
b)
A = {x E Z/ x > 1}
A = {2, 3, 4,, .......} A∩B = {3, 4, 5, ....} AUB {2, 3, 4, .....}
B = {x E Z/ x > = 3}
B = {3, 4, 5, .......}
c)
A = {x E Z/ x < 10}
A = {.... -3, -2, -1, 0,1, 2........8, 9}
B = { x E N*/ x < 6}
B = {1, 2, 3, 4, 5}
A∩B = {1, 2, 3, 4, 5} AUB = {...., -3, -2, -1,......., 7, 8, 9}