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Scrieti ca interval multimile:
A={x€ R/-2<x<5}=
B={x€R/0≤ x<4}=
C={x€ R/x≥ -5}=
D={x€ R/x<1}=
E={x€R/ |x|< 2}=
F={x€ R/ |x| ≤3}=

(€ inseamna apartine)​


Răspuns :

-2 < x < 5

x € R

=> A= (-2, 5)

[tex]0 \leqslant x < 4[/tex]

x€ R

=> B = [0, 4)

[tex]x \geqslant - 5[/tex]

=> C = [-5, +infinit)

x < 1

=> D = (-infinit, 1)

[tex] |x| < 2 \\ - 2 < x < 2[/tex]

=> E = (-2, 2)

[tex] |x| \leqslant 3 \\ - 3 \leqslant x \leqslant 3[/tex]

F = (-3, 3)