log 3 = a log 5 =b maka 135

Mapel: Matematika
Bab: Logaritma
Kelas: X

Log 135
= Log ( 3^3 x 5)
= Log 3^3 + log 5
= 3.log3 + log 5
= 3a + b

log 3 = a
log 5 = b
log 135 = log (3 x 3 x 3 x 5) sifat perkalian logaritma
            = log 3 + log 3 + log 3 + log 5
            =  a + a + a + b
            = 3a + b