8. Korrutise logaritm
● Leiame kahe logaritmi summa
log a
x =c log a
y = d
ac
= x a d
= y
x ∙ y = ac
∙ ad
= ac + d
log a
xy = c + d = log a
x + log a
y
log a
xy = log a
x + log a
y
9. Jagatise logaritm
● Leiame kahe logaritmi vahe
log a
x =c log a
y = d
ac
= x a d
= y
x : y = ac
: ad
= ac - d
log a
x:y = c - d = log a
x - log a
y
log a
x:y = log a
x - log a
y
10. Astme logaritm
● Otsime valemit, et leida log a
b n
log a
b = x
ax
=b
ax n
= b n
log a
b n
= nx
log a
b n
= n log a
b