Question

Diketahui deret geometri Un=3.2^n+1, tentukan a, r, U6, dan U4!

Answer 1

A=3
r=2
u6 = 3 . 2 ^6+1
=3 . 2^7
=3 . 128
= 384
u4= 3 . 2^4+1
= 3 . 2^5
= 3 . 32
=96