Question

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Answer 1

Respostas:

a) [-1, 7] ou S = {x / -1 ≤ x ≤ 7}

b) ]2, ∞[ ou S = {x / x > 2}

c) ]1, 4[ ou S = {x / 1 < x < 4}

d) ]-∞, 6] ou S = {x / 6 ≤ x}

e) [m, n[ ou S = {x / m ≤ x < n}