" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
U₂ = 6
U₄ = 3/2 = 1,5
Ditanyakan:
S₆ = ?
Jawab :
U = 6 → a.r² = 6 → a.r = 6 → a = 6/r
U = 1,5 → a.r = 1,5 → a.r³ = 1,5
a.r³ = 1,5 → 6/r . r³ = 1,5 → r² = 1,5/6 → r² = 1/4 → r = 1/2
a = 6 / 1/2 → a = 12
Sn = a (1 - rⁿ) / (1 - r)
S₆ = 12 (1 - 1/2⁶) / 1 - 1/2
= 12 (1 - 1/64) / 1/2
= 189/8 = 23,625
Jadi, S₆ = 23,625 atau S₆ = 189 / 8
# Maaf kalau salah