27,9,3,...........................u7
Matematika
harun14092
Pertanyaan
27,9,3,...........................u7
1 Jawaban
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1. Jawaban FerryWidjojo
dik u1=27
u2=9
u3=3
dit u7?
r=u2/u1=9/27=1/3
un=ar^n-1
un=27×1/3^7-1
= 27×1/729
=1/27