Question

1) Represente na forma tabular cada conjunto:

a) {x ε N/ x> 6} b) {x ε N/-4 < x < 2} c) b) {x ε Z/-2 ≤ x < 4}



d) {x ε Z*/-3 ≤ x ≤ 3} e) {x ε Z/-5 < x < 1} f) {x ε Z/ x < 3}



g) {x ε Z/ x ≥ -2} h) {x ε N*/ x< 5} i) {x ε N/-1 < x < 5}




j) {x ε Z/-4< x < 1} k) {x ε N*/x < 6} l) {x ε Z/-5 ≤ x < 1}




m) {x ε N/ x> 2} n) {x ε N/-1 < x < 3} o) b) {x ε Z/-5 ≤ x < 10}




p) {x ε Z*/-8 ≤ x ≤1} q) {x ε Z/-2 < x < 8} r) {x ε Z/ x < -3}




2) Associe com pertence (∈) e não pertence (∉), justificando quando não pertencer.

a) 24....N b) – 10....N c) 2,7....N d) 14....Z e) -38....Z



f) -22,7....Z g) 13....Q h) -10....Q i) -0,86...Q j) (2,2333...)....Q



k) 81....N l) 5....Q m) 11....Ir n) 0....Ir o)(0,333...)....Ir

Answer 1

Resposta:

A = {x ∈ Z | - 3 ≤ x ≤ 3} => A = { -3,-2,-1,0,1,2,3 }

B = {x ∈ Z | x² = 9} ==> B= { -3 ,3}

C = {x ∈ N | x² = 9} ==> C+ { 3 }

D = {x ∈ N | 9 ≤ x < 100} ==> D= { 9,10,11,.............., 98,99}

E = {x ∈ N | x > 54} ==> E = { 55,56,57,.......................}