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determinati multimile A ={x|x apartine N si xapartine D 12

Răspuns :

[tex]A=\left \{ x\:|\:x\:\in\:\mathbb{N} \:si\:x\:\in\:D_{12}\right \}[/tex]

[tex]D_{12}=\left \{ \pm1,\pm2,\pm3,\pm4,\pm6,\pm12 \right \}[/tex]

[tex]x \: \in \: \mathbb{N} = > x \: \in \: \left \{ 1,2,3,4,6,12 \right \}[/tex]

[tex] = > A=\left \{ 1,2,3,4,6,12 \right \}[/tex]