8 + 2 + 1/2 + 1/8 +...
Tentukan!
a. Sn=
b. S8=
Tentukan!
a. Sn=
b. S8=
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r=2/8=1/4
sn= a(1-r^n)/(1-r)
= 8(1-1/4^n)/(1-1/4)
= 32/3( 1- 1/4^n)
s8= 32/3(1-1/4^8)
= 32/3( 1 - 1/65.536)
= 32/3(65.535/65.536)