Dapatkan perbandingan antar suku berurutan dan suku ke-8 dari tiap - tiap bariasn bilangan berikut ini: a. 64,-96,144,-216,... b. , , ,,... c. d. , 1, , ,... HARUS PAKAI CARA YANG LENGKAP
ashofwan
A. perbandingan antar suku berurutan = rasio (r) = - 3/2 a = 64 U8 = ar^n-1 = 64 x -3/2^8-1 = 64 x -3/2^7 = - 2187 = - 1093,5 2 b. perbandingan antar suku berurutan = rasio (r) = 1/2 a = 2/3 U8 = ar^n-1 = 2/3 x 1/2^8-1 = 2/3 x 1/2 ^7 = 1/192 c. perbandingan antar suku berurutan = rasio (r) = a = U8 = ar = = = d. perbandingan antar suku berurutan = rasio (r) = 3/7 a = 7/3 U8 = = 7/3 x 3/7 = 7/3 x 3/7 = 729 117649
a = 64
U8 = ar^n-1 = 64 x -3/2^8-1
= 64 x -3/2^7
= - 2187 = - 1093,5
2
b. perbandingan antar suku berurutan = rasio (r) = 1/2
a = 2/3
U8 = ar^n-1 = 2/3 x 1/2^8-1
= 2/3 x 1/2 ^7
= 1/192
c. perbandingan antar suku berurutan = rasio (r) =
a =
U8 = ar =
=
=
d. perbandingan antar suku berurutan = rasio (r) = 3/7
a = 7/3
U8 = = 7/3 x 3/7
= 7/3 x 3/7
= 729
117649