Jawaban:
U2 = -32
U5 = 4
Un = arⁿ⁻¹
U2 = ar¹
U5 = ar⁴
ar⁴ / ar = 4 / -32
r³ = 1/-8
r³ = -1/2³
r = -1/2
Jadi rasio nya = 1/2
Diketahui:
U2 = a . r = - 32
U5 = a . r^4 = 4
Ditanyakan:
rasio geometri tersebut = ... ?
Penyelesaian:
r^4/r = 4/- 32
r^3 = - 1/8
r = - 1/2
==================
Kelas: 9
Mapel: Matematika
Bab: Barisan dan Deret Bilangan
Kode: 9.2.2
Kata Kunci: Barisan geometri
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Verified answer
Jawaban:
U2 = -32
U5 = 4
Un = arⁿ⁻¹
U2 = ar¹
U5 = ar⁴
ar⁴ / ar = 4 / -32
r³ = 1/-8
r³ = -1/2³
r = -1/2
Jadi rasio nya = 1/2
Diketahui:
U2 = a . r = - 32
U5 = a . r^4 = 4
Ditanyakan:
rasio geometri tersebut = ... ?
Penyelesaian:
r^4/r = 4/- 32
r^3 = - 1/8
r = - 1/2
==================
Detil Jawaban
Kelas: 9
Mapel: Matematika
Bab: Barisan dan Deret Bilangan
Kode: 9.2.2
Kata Kunci: Barisan geometri