Question

Determinati numerele intregi x, stiind ca 11\2x-1 este numar intreg

Answer 1

2x-1∈D₁₁;
⇒D₁₁∈[-11,-1,1,11];
⇒2x-1=-11
⇒2x=-10⇒x=-5;
⇒2x-1=-1
⇒2x=0⇒x=0;
⇒2x-1=1
⇒2x=2⇒x=1;
⇒2x-1=11
⇒2x=12⇒x=6;
⇒x∈[-5,0,1,6];