Question

Jumlah deret geometri tak terhingga 8+4+2+ ... adalah

Answer 1

A = 8
r = 4/8 = 1/2
sn = a/(1-r)
     = 8/(1-1/2)
     = 8/(1/2)
     = 16

Answer 2

Dik :
a=8
r=1/2
dit :
s~

jwb:
s~ = a/1-r
s~ = 8/1-1/2
s~ = 8/1/2
s~ = 8(2)
s~ = 16