B={-3, -2, -1}
C={0, 1}
D={-2, 0}
E={-3, -2, -1, 0, 1}
F=∅
Răspuns:
Explicație pas cu pas:
A = {x ∈ Z I -3 ≤ x < 2}
A = {-3 ; -2 ; -1 ; 0 ; 1}
-----------------------------
B = {x ∈ A I x < 0} => B = {-3 ; -2 ; -1 }
C = {x ∈ A I x ≥ 0} => C = {0 ; 1}
D = {x ∈A I x este numar par} => D = {-2 ; 0}
E = {x ∈ A I x = a+b , a,b ∈ A} =>
a = {-3 ; -2 ; -1 ; 0 ; 1} ; b = {-3 ; -2 ; -1 ; 0 ; 1}
a+b = -3+(-3) = -6
=-3+(-2) = -5
=-3+(-1) = -4
=-3+0 = -3
=-3+1 = -2
=-2+(-3) = -5
=-2+(-2) = -4
=-2+(-1) = -3
=-2+0 = -2
=-2+1 = -1
...................
= 1+1 = 2
E = {-6 ; -5 ; -4 ; -3 ; -2 ; -1 ; 0 ; 1 ; 2}
F = {x ∈ A I x > 1} => F = ∅
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B={-3, -2, -1}
C={0, 1}
D={-2, 0}
E={-3, -2, -1, 0, 1}
F=∅
Răspuns:
Explicație pas cu pas:
A = {x ∈ Z I -3 ≤ x < 2}
A = {-3 ; -2 ; -1 ; 0 ; 1}
-----------------------------
B = {x ∈ A I x < 0} => B = {-3 ; -2 ; -1 }
C = {x ∈ A I x ≥ 0} => C = {0 ; 1}
D = {x ∈A I x este numar par} => D = {-2 ; 0}
E = {x ∈ A I x = a+b , a,b ∈ A} =>
a = {-3 ; -2 ; -1 ; 0 ; 1} ; b = {-3 ; -2 ; -1 ; 0 ; 1}
a+b = -3+(-3) = -6
=-3+(-2) = -5
=-3+(-1) = -4
=-3+0 = -3
=-3+1 = -2
=-2+(-3) = -5
=-2+(-2) = -4
=-2+(-1) = -3
=-2+0 = -2
=-2+1 = -1
...................
= 1+1 = 2
E = {-6 ; -5 ; -4 ; -3 ; -2 ; -1 ; 0 ; 1 ; 2}
F = {x ∈ A I x > 1} => F = ∅