Exercice 3.
Pour chaque question, donner l'union et l'intersection des intervalles I et J:
1. I = [-5; 5]
J = [-2; 10]
a. In J =
b. IUJ=
2. I =] - T; π[
I = [-10; 5]
a. In J =
b. IUJ=
=
3. I =] - ∞0; 1]
I = [1; +∞0[
a. In J =
b. IUJ =
4. I =] - ∞0; -10[
I =]10; 15]
a. In J =
b. IUJ =




C’est l’exercice de tout en haut

merci bonne soirée
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