bonjour
12 < x < 13 ⇔ x ∈ ] 12 ; 13 [
- 2 ≤ x ≤ 3 ⇔ x ∈ [ - 2 : 3 ]
- 0.5 ≤ x < - 0.25
x < 1 ⇔ x ⇔ ] - ∞ ; 1 [
x < 8
5 ≤ x
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bonjour
12 < x < 13 ⇔ x ∈ ] 12 ; 13 [
- 2 ≤ x ≤ 3 ⇔ x ∈ [ - 2 : 3 ]
- 0.5 ≤ x < - 0.25
x < 1 ⇔ x ⇔ ] - ∞ ; 1 [
x < 8
5 ≤ x