pt -bpt mu loga (LT cap toc)

1) (A07)
3 1
3
2log (4 3) log (2 3) 2x x + +
(
3
3
4
x<
)
2) (D305)
2
2 4 2
3
log log ( 4 4) log 3
2
x
x x
x
+
+ + + >

(x>2
4x <
)
3) (D206)
2 4 2
1
2(log 1) log log 0
4
x x+ + =

( x=2

x= ẳ)
4) (B203)
0,5 0,25 2
log 2 log ( 1) log 6 0x x
+ +
(x 3)
5)
2 4 1
2
log 2 log 5 log 8 0x x- + + + =
3 17
6;3;
2
x
ổ ử
ỡ ỹ
ù ù
-
ữ
ỗ
ù ù
ữ
ỗ
ẻ -
ớ ý
ữ
ỗ
ữ

ù ù
ỗ
ữ
ỗ
ố ứ
ù ù
ợ ỵ
6)
2
2 4 1
2
log ( 2) log ( 5) log 8 0x x+ + - + =
3 17
6;
2
x x
ổ ử

ữ
ỗ
ữ
ỗ
= =
ữ
ỗ
ữ
ữ
ỗ
ố ứ
7)

8
4 2
2
1 1
log ( 3) log ( 1) log (4 )
2 4
x x x+ + =
(x = 3

x= 3+
12
)
8)
2
9 1 3
3
log ( 3) log 2 log 2 1x x+ - - - <
( 4; 3) ( 3; 1) (0;2) (2;3)- - ẩ - - ẩ ẩ
9)
3
3
log 1
log 1
2 .5 400
x
x
+
+
<
( -10 < x < 8 )

10) (B104)
1
2 4 16
4
2
x
x
x

+
>

(x<2

x> 4)
11) (A104)
2
2
4
log [log ( 2 )] 0x x x

+ <
(x >1 x< - 4)
12) (B204)
3
log log 3
x
x >
( x>3

1/3 <x <1)
13) (D03)
2 2
2
2 2 3
x x x x +
=
(x =1

x=2)
14) (D2.05)
3
3
1
.29
2
2
2
2










xx

xx
(
1 2 1 2x +
)
15) (B206)
2 2
1 2
9 10.3 1 0
x x x x+ +
+ =
( x=1

x= 2)
16) (A.06) 3.8
x
+4.12
x
18
x
2.27
x
=0 (x=1)
17) (D06)
2 2
2
2 4.2 2 4 0
x x x x x+
+ =
( x=0

x=1)
18) (CHQ 05)
1 2 1
2
3 2 12 0
x
x x+ +
<
(x >0)
19) (B07)
( ) ( )
2 1 2 1 2 2 0
x x
+ + =
(x = 1)
20) (D203)
5
log (5 4) 1
x
x =
(x =1)
21) (B06)
2
5 5 5
log (4 144) 4 log 2 1 log (2 1)
x x

+ < + +
(2<x<4)
22) (B02)

3
log (log (9 72)) 1
x
x

(
9
log 73 2x<
)
23) (D07)
( )
2 2
1
log 4 15.2 27 2log 0
4.2 3
x x
x
+ + + =

2
( log 3)x =
24) (D106)4
x
2
x+1
+2(2
x
1)sin(2
x
+y 1) +2 =0 (x =1, y =

2
p
1 +k2)
25) (D106)
1
3 3
log (3 1) log (3 3) 6
x x +
=
( x=
3
log 10

x=
3
28
log
27
)
26) (D102) 16
3
2
3
27
log 3log 0
x
x
x x =
(x=1)
27) (A102)

2 1
1 0,5
2
log (4 4) log (2 3.2 )
x x x+
+
( x 2)
28) (A204)2
2 2
1 3
log log
2 2
2
x x
x

(0 < x 2

x4)
29) (A203)
1 1
15.2 1 2 1 2
x x x+ +
+ +
(x 2)
30) (D103) f(x)=
log 2.
x
x
. Gii bpt f (x)0 (0 < x e

x 1)
31) (B3-03)
3 2 3 2
x x
x+ = +
( x=0

x=1)
32)
2 2 2
log 9 log log 3
2
3
x
x x x
=
(x = 2 )
33)
5 5
log 3 log
4
x
x x+ =
(x=25)
34)
2 2
2 3
log ( 5 5 1) log ( 5 7) 2x x x x
+ + + +

(
5 5 5 5
1 4
2 2
x x
+

)
35) (A-08)
2 2
2x-1 x 1
log (2x x 1) log (2x-1) 4
+
+ - + =
5
x 2;x
4
= =
36) (B-08)
ổ ử
+
ữ
ỗ
<
ữ
ỗ
ữ
ỗ
ố ứ
+

2
0,7 6
log log 0
4
x x
x
- - ẩ +Ơ( 4; 3) (8; )
37) (D-08)
- +

2
1
2
3 2
log 0
x x
x
) (
ộ ự
- ẩ +
ờ ỳ
ở ỷ
2 2;1 2;2 2
38) (A1-08)
+

+
1 2
3
2 3

log (log ) 0
1
x
x
x < 1
39) (A1-08)
sin( )
4
tan
p
-
=
x
e x
x= /4 + k
40) (A2-08)
+ = -
3
1 6
3 log (9 )
log
x
x
x x
x =
2
41) (B1-08)
+ + - =
2 1
2

2log (2 2) log (9 1) 1x x
x= 1; x =
3
2
42) (B2-08)
2 1 2 1
3 2 5.6 0
+ +
- - Ê
x x x
2
3
1
log
2
Êx
43) (D1-08)
2 2
2 4 2 2 1
2 16.2 2 0
- - - -
- - Ê
x x x x
1 3 1 3- Ê Ê +x
44) (D1-07)
- + + -
2 2
1 2
2
1 1

log 2 3 1 log ( 1)
2 2
x x x
Ê <
1 1
3 2
x
45) (D2-07)
2
2 1
log 1 2
-
= + -
x
x
x
x
x= 1
46) (D2-07)
3 1 2
2 7.2 7.2 2 0
+
- + - =
x x x
x= 0; 1
47) (A1-07)
+
2
4 2
(log 8 log )log 2 0

x
x x
1
0 1
2
< Ê >x x
48) (A2-07)
+
- + = + +
4 2
2 1
1 1
log ( 1) log 2
log 4 2
x
x x
x =
5
2
49) (B1-07)
- + - =
2
3
3
log ( 1) log (2 1) 2x x
x=2
50) (B2-07)
+ - =
-
3 9

3
4
(2 log )log 3 1
1 log
x
x
x
x=
1
3
; x= 81