👤

A={x€N|x€Mla puterea 4 ,x<19}

Răspuns :

0^4 = 0 < 19 => apartine A

1^4= 1 < 19 => apartine A

2^4 = 16 < 19 => apartine A

3^4 = 27 x 3 = 81 > 19 => nu apartine A