Question

Fie progresia geometrica in care b1=3 , b2=12 . Aflati b4.

Answer 1

q-rația,

b2=b1×q;

12=3×q;

q=12/3;

q=4;

b4=b1×q³;

b4=3×4³;

b4=3×64;

b4=192;