Question

Tentukan nilai p = 1/3 + 1/9 + 1/27 + 1/81 +....
Tolong dong diisiin cara ya

Answer 1

Awal  = 1/3

rasio = U2 / U1
= (1/9) / (1/3)
= 1/9 * 3
= 3/9
= 1/3

Answer 2

Misalkan: r = 1/3, p = 1/3 + 1/9 + 1/27 + ....
maka,

        p = 1/3 + 1/9 + 1/27 + ....
1/3 · p = 1/9 + 1/27 + 1/81 +.....    _
2/3 · p = 1/3
        p = 1/3 · 3/2 = 1/2 , oke???