Jumlah tak hingga deret geometri 6+2+2\3+...

Kelas 10 Matematika
Bab Barisan dan Deret Bilangan

r = U2/U1
r = 2/6
r = 1/3

S∞ = a / (1 - r)
S∞ = 6/(3/3 - 1/3)
S∞ = 6/(2/3)
S∞ = 6 . 3/2
S∞ = 9