Question

The first five terms of
a1=1, an=3a(n-1), for n greater than or equal to 2

Answer 1

Hi,

Explanation:

`a_1=1\\a_n=3*a_(n-1)\\\\a_2=3*a_1=3*1=3\\a_3=3*a_2=3*3*a_1=3^2*1=9\\a_4=3*a_3=3*3^2=3^3=27\\a_5=3*a_4=81\\a_6=3*a_5=243\\a_n=a_1*3^(n-1)\\`