Question

2. Enumérer les éléments des ensembles: a) A = {x e N. x < 9}; b) B = {x € Z-3 < x < 6}; c) C = {x e Zº| -5 < 2x + 1 = 7}; d) D = {x € Q ||x = 3,5}; e) E = {x e Z | x = 4n -2, n e N}; f) F = {x € ZX = n - 1, n e N}
( enumerati elementele seturilor .)Am nevoie de ajutor !​

Answer 1

Răspuns:

a) A = {0,1,2,3,4,5,6,7,8}

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

c) - 5 < 2x+1 < 7

-6 < 2x < 6

-3 < x < 3

C = {-2, - 1, 0, 1, 2}

d) 3,5 = 35/10 = 7/2

D = {7/2}

e) n e {0, 1, 2, 3,........}

E = { -2, 2, 6, 10, 14,......}

f) n e {0, 1, 2, 3, ......}

F = { -1, 0, 1, 2, 3, .......}