Question

Elementele mulțimii A={x|x lui N,13,4-2x>2,47}sunt :
{0,1,2,3},{0;1},{0,1,2,3,4,5},{0,1,2,3,4},{0,1,2}?

Answer 1

Varianta corecta este {0,1,2,3,4,5}

daca x=0 => 13,4-0=13,4 > 2,47

daca x=1 => 13,4-2 = 11,4 > 2,47

x=2 => 13,4-4 =9,4 > 2,47

x=3 => 13,4-6= 7,4 > 2,47

x=4 => 13,4-8= 5,4 > 2,47

x=5 => 13,4-10 = 3,4 > 2,47