Question

Jumlah deret geometri tak hingga 1/2 p - 2/5 p* + 8/25 p pangkat 3 - .....adalah 1/3.tentukanbnilai p!

Answer 1

R=(-2p^2/5)/(p/2)=-4p/5 dan a=p/2
Stakhingga  =  1/3
(p/2)/ (1-(-4p/5)) = 1/3
(5p)/(8p+10) = 1/3
15p = 8p+10
7p = 10
p = 10/7