Question

Enumerati elementele multimii:
A={x apartine z|2<|x|<5}
URGENT VA ROOOG

Answer 1

$A=\left \{ x\:\in\:\mathbb{Z}\:| \:2<|x|<5\right \}$

$|x| \: \in \: (2,5)$

$= > |x| \: \in \: \left \{ 3,4 \right \}$

$|x| = | - x| = x$

$|3| = | - 3| = 3$

$|4| = | - 4| = 4$

$= > x \: \in \: \left \{ \pm3, \pm4 \right \}$