jika [tex]jika \: 7 log2 = a \: dan \: 2 log3 = b \: maka \: 6 log15 = [/tex]
Matematika
hana1023
Pertanyaan
jika
[tex]jika \: 7 log2 = a \: dan \: 2 log3 = b \: maka \: 6 log15 = [/tex]
[tex]jika \: 7 log2 = a \: dan \: 2 log3 = b \: maka \: 6 log15 = [/tex]
1 Jawaban
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1. Jawaban khominghoo
5log2 = a
²log3 = b
6log15 = ²log15/²log6
= ²log5 + ²log3 / ²log2 + ²log3
= (1/a + b)/(1+b)
= (1+ab)/a(1+b)
= (1+ab)/(a+ab)