Question

Jika 2 log 3 = a dan 2 log 5 = b, nilai # log 15 = ?

Answer 1

Verified answer

Log 15=2log15/2=2log3+2log5/2=a+b/2

Answer 2

Bab Logaritma
Matematika SMA Kelas X

log 15 = ²log 15 : ²log 10
           = (²log (3 . 5)) : (²log (5 . 2))
           = (²log 3 + ²log 5) : (²log 5 + ²log 2)
           = (a + b) / (b + 1)