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Matematika
HerlinTyaa
Pertanyaan
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1 Jawaban
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1. Jawaban DB45
Logaritma
²log 5 = p
⁵log 3 = q
²log 3 = ²log 5. ⁵log 3 = p q
a). ¹⁵log 12 = ²log 12 / ²log 15
= (²log 4 + ²log 3)/(²log 5 + ²log 3)
= (2 + pq)/(p+ pq)
b) ⁷⁵log 18 = (²log 18)/(²log 75)
= (²log 2 + ²log 9) /(²log 25 + ²log 3)
= ( 1 + ²log 3²) / (²log 5² + ²log 3)
= (1 + 2pq) /(2p + pq)
c) ³⁰log 6 = ²log 6/ ²log 30
= (²log 2 + ²log 3) / (²log 2 + ²log 3 + ²log 5)
= (1 + pq) / (1 + pq+p)
d) ³⁰log 405 = ²log 405/²log 30
= (²log 3⁴ + ²log 5) / (²log 2 + ²log 3 +²log 5)
= (4. ²log 3 + ²log 5) / ( ²log 2 + ²log 3 + ²log 5)
= (4 pq + p) /(1+pq + p)
e) ⁶log 50 = (²log 50) /(²log 6)
= (²log 2 + ² log 25) /(²log 2+ ²log 3)
= (²log 2 + 2.²log 5) / (²log 2 +²log 3)
= (1 + 2p) /(1 + pq)
f) ³⁰log 150 = (²log 150)/(²log 30)
= (²log 2 + ²log 3+ ²log 25) / (²log 2 + ²log 3 + ²log 5)
= (1 +pq + 2 p)/ (1+ pq + p)