Question

What are the first four terms of the geometric sequence with a t1 = 3 and tn = 2tn-1?

Answer 1

Hello,

$t_{1} =3\\ t_{n} = 2*t_{n-1}\\ t_{2} =2* t_{1} =2*3=6\\ t_{3} =2* t_{2} =2*6=12\\ t_{4} =2* t_{3} =2*12=24$