Question

Determinati multimea: A={x apartine Z/-10<x<4;x aprtine M3}

Answer 1

$A=\left \{ x\:\in\:\mathbb{Z}\:|\:-10 < x < 4 \: ; \: x\:\in\:M_{3}\right \}$

$- 10 < x < 4 = > x \: \in \: ( - 10,4)$

$x \: \in \: M_{3} = > x \: \in \: \left \{ -9,-6,-3 ,0,3\right \}$

$= > A=\left \{ -9,-6,-3 ,0,3\right \}$