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Kelas/Pelajaran : X/MatematikaMateri : LOGARITMA
Penyelesaian : TERLAMPIR
Jawaban :
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♦ Penyelesaian .( ^ ) = pangkat
1⃣
^7 log 2 = a
Ubah → log 2 / log 7 = a , a log 7 = log 2
²log 3 = b
Ubah → log 3 / log 2 = b , b log 2 = log 3
• Jawab :
= ^6 Log 98
= log 98 / log 6
= log (7² . 2) / log (3 . 2)
= log 7² + log 2 / log 3 + log 2
= 2 log 7 + a log 7 / b log 2 + log 2
= 2 log 7 + a log 7 / ab log 7 + a log 7
= (2 + a) log 7 / (ab + a) log 7
= 2 + a / ab + a
Sederhanakan
= a + 2 / a (b + 1)
Opsi → C
2⃣
umpamanya ( a ) adalah ( n ).
ⁿlog (1 - ³log frac (1) (27)) = 2
ⁿlog (1 - ³log 1/27) = 2
ⁿlog (1 - ( -3 )) = 2
ⁿlog 4 = 2
n² = 4
n = √(4)
n = 2
Jadi, nilai n atau a adalah 2.
Opsi → B
• Catatan :
= ³log 1/27
= ( -3 )
Karena
= 3^-3
= 1/27
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♦ Pembahasan tambahan :
→ brainly.co.id/tugas/3597597
→ brainly.co.id/tugas/12617727
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Mapel : Matematika
Kelas : 10 SMA
Materi : Logaritma
Kode Kategori : 10.2.1 (Kelas 10 Matematika Bab 1 - Logaritma)
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