Jawab: 28
Penjelasan dengan langkah-langkah:
a = 1/27
r = 3
U4 + U7 = ar^3 + ar^6
= ar^3 (1 + r^3)
= 1/27 × 3^3(1+3^3)
=28
============================
Mapel : Matematika
Kode : 2
Kelas : IX SMP
Kata kunci : barisan dan deret
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Jawab: 28
Penjelasan dengan langkah-langkah:
a = 1/27
r = 3
U4 + U7 = ar^3 + ar^6
= ar^3 (1 + r^3)
= 1/27 × 3^3(1+3^3)
=28
============================
Mapel : Matematika
Kode : 2
Kelas : IX SMP
Kata kunci : barisan dan deret