Jawabanmu

2014-05-20T23:01:09+07:00
Kalau deret geometrinya 6 + 2/3  +  2/27 + ...
r = (2/3)/6 =2/18 = 1/9
S∞ = 6/(1 - 1/9)
     = 6/(8/9)
     = 54/8
     = 27/4
kalau deret geometrinya 6 + 2 + 2/3 + 2/9 + ....
r = 2/6 = 1/3
S∞ = 6/(1 - 1/3)
     = 6/(2/3)
     = 18/2
     = 9
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