Question

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Aflati a, b apartine ℤ, a < b :

a) [a;b] intersectat (-2;2)=[-1;1]
b )[a;2]∩(-3;b)=[-2;2);
c) (a;b) ∩ Z= {-3};
d).(a;b] ∩ N= {5}

Answer 1

a) a=-1 b=1
b) a=-2 b=2
c) a=-4 b=-2
d) a=4,b=5