Hasil dari log 27 : log 9 =

27 log 9 = 3^3 log 3^2
= 2/3 3 log 3
= 2/3

Ingat sifat logaritma :

ⁿlog a = ^c log a / ^c log n
dan
^(a^n) log b^m = m/n × ^a log b

log 27 / log 9
= [tex] ^9 \log 27 [/tex]
= [tex] ^{3^2} \log 3^3 [/tex]
= 3/2 × ³log3
= 3/2 × 1
= 3/2 atau 1,5