1) a’ =b@ x =log, b
(a,b >0; a# 1)
2) a" =p,
3) log, a’ =b
4)log,1=0
5)log, a =1
6) log, (b,b,) =log, b, + log, b,
7) log, - =log, b, - log, b,
8)log, b° =alog, b
9)log„ D =" log, b
Cho a>0; m,n [JR ta ca:
Ya" =
2)a” =1
n m+n _— m
3)a =a’ a
m
m-n_— q
4)a = ar
5)(ab)” =q”b”
m m
| a —q
6) a TC m
logarit
10) log, Vb =llog b
n 13)log,, b =Igb =logb
11)log pb= 9<” — 14)log,b =lnb
log a ]
1 15) log, > log, b
log, a
12)log, b=
Luu thoa
7)& m y =a mn
8)a>l;a”>a `" © m>n 9)0<a<l;a >a © m<n
m
10)Va" =a"
l
11a =a"
L3 Thb Ngäc Thuy-
Ngocthuygvthpt@gmail.com.vn