Saya mau tanya tentang LOGARITMA

Materi : Logaritma
Kelas : X SMA K.13 REVISI

log 15 = 1,1761

log 45 = log 3* 15
= log 3 + log 15
= 0,4772 + 1,176
= 1, 6532

log 45 = log (3.3.10)/2
= log 3 + log 3 + log 10 - log 2
= 0,4771 + 0,4771 + 1 - 0,3010
= 1,6532

log 15 = log (3.10)/2
= log 3 + log 10 - log 2
= 0,4771 + 1 - 0,3010
= 1,1761