Question

1. B={x ∈ R | x ∈ (-11;5) sau x ∈ [-7;7]}
2. C={x ∈ R | x ∈ (-4;3] si x ∈ [-3;4)}
3. D={x ∈ R | x ∈ (-6;4) si x ∈ (-2;6]}
Va rog ajutati-ma !!! 

Answer 1

pt.x∈(-11,5)
B={-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4}
pt.x∈[-7,7]
B={-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7}
pt.x∈(-4,3]
C={-3,-2,-1,0,1,2,3}
pt.x∈[-3,4)
C={-3,-2,-1,0,1,2,3}
pt.x∈(-6,4)
D={-5,-4,-3,-2,-1,0,1,2,3}
pt.∈(-2,6]
D={-1,0,1,2,3,4,5,6}