Question

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)​

Answer 1

-2 < x < 5

x € R

=> A= (-2, 5)

$0 \leqslant x < 4$

x€ R

=> B = [0, 4)

$x \geqslant - 5$

=> C = [-5, +infinit)

x < 1

=> D = (-infinit, 1)

$|x| < 2 \\ - 2 < x < 2$

=> E = (-2, 2)

$|x| \leqslant 3 \\ - 3 \leqslant x \leqslant 3$

F = (-3, 3)