Question

Deteriminati  x ∈N  , astfel incat numerele rationale sa fie numere naturale : 6/x+1

Answer 1

x+1∈D6
D6={1,2,3,6}
x+1=1⇒  x=1-1⇒x=0∉D6
x+1=2⇒ x=2-1⇒x =1∈D6
x+1=3⇒ x=3-1⇒ x=2∈D6
x+1=6⇒ x=6-1⇒ x=5∉D6
deci x∈{1,2}

Answer 2

x∈N{0,1,2,5}
Sper ca te-am ajutat