jika 2log3 = a dan 2log5 = b maka 15 log40=
Matematika
Reainer
Pertanyaan
jika 2log3 = a dan 2log5 = b maka 15 log40=
1 Jawaban
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1. Jawaban Anonyme
LogAritMa
2'log 3 = a
2'log 5 = b
15'log 40
= 2'log 40 / 2'log 15
= 2'log (2³ × 5) / 2'log (3 × 5)
= (2'log 2³ + 2'log 5) / (2'log 3 + 2'log 5)
= (3 . 2'log 2 + 2'log 5) / (2'log 3 + 2'log 5)
= (3 + b) / (a + b)