log 2 = 0,3010,log 3 =0,4771 log 5 = 0,6990 tentukanlah log 18

log 18
= log 9×2
= log 3² × 2
= log 3² + log 2
= 2 log 3 + log 2
= 2 × 0,4771 + 0,3010
= 1,2552

Maaf kalau salah.