12.3 Write the first five terms of the sequence whose general term is a_(n)=3^(n)+4 .

Question

12.3 Write the first five terms of the sequence whose general term is
`a_(n)=3^(n)+4` .

Answer 1

7,13,31,85,247......

Explanation:

`a_n =3^n + 4`

`\sf a_1=3^1 + 4 = 3 + 4 = 7\\\\a_2 = 3^2 + 4 = 9 + 4 = 13\\\\a_3 = 3^3 + 4 = 27 + 4 = 31\\\\a_4 = 3^4 + 4 = 81 + 4 = 85\\\\a_5 = 3^5 + 4 = 243 + 4 = 247`