Tentukan suku yg diminta Dari barisan geometrik a=27, U4=1, U7=

U4=a.r^3
U1= a=27

lakukan perbandingan U4/U1, sehingga didapat r^3= 1/27
dan r=1/3
U7 =a.r^6 = 27.(1/3)^6=1/27

a = 27

U4 = 1
ar^3 = 1
27 r^3 = 1
r^3 = 1/27
r = 1/3


U7 = ar^6
= 27 (1/3)^6
= 27/729
= 1/27

Thanks....