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Lou974
@Lou974
April 2019
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Bonsoir je voudrais de l'aide :
Exercice (QCM à justifier) :
L'intervalle [-2 ; 3] est égal à :
- [-4 ; 7] ∩ ]2 ; 3[.
- [-2 ; 5] U [-4 ; 3].
- ] -infini ; 3[ ∩ [2 ; 3].
- [-2 ; +infini[ ∩ ]-infini ; 3].
Merci de votre aide
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slyz007
Verified answer
Bonjour,
]2;3[ est inclu dans [-4;7] donc le premier équivaut à ]2;3[
[-2;5]U[-4;3] = [-4;5]
]-∞;3[∩[2;3] = [2;3[
[-2;+∞[
∩]-∞;3] = [-2;3]
2 votes
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Verified answer
Bonjour,]2;3[ est inclu dans [-4;7] donc le premier équivaut à ]2;3[
[-2;5]U[-4;3] = [-4;5]
]-∞;3[∩[2;3] = [2;3[
[-2;+∞[∩]-∞;3] = [-2;3]