bt pt mũ và logarit

Giảicác phương trình sau
a.
xx
−−
=
82
74
2
b.
68.3
2
=
+
x
x
x
c.
7
7
5
125,0.25,032
+
−
+
=
x
x
x
d.
2457.5.3
12

=
−−
xxx
e.
5008.5
1
=
−
x
x
x
f.
xxx
6242.33.8
+=+
g.
xx 57
75
=
h.
553.515 +=+
xxx
k.
1224
222
)1(1
+=+
+−+
xxxx
l.

2655
31
=+
+−−
xx
n.
322
22
2
=−
−+−
xxxx
m.
0273.43
5284
=+−
++
xx
1.
5
24
28
=
−
+
x
xx
2.
62.42
22

sincos
=+
xx
3.
6752793
3
2
132
=+−
−−
x
xx
4.
xxx
6.59.24.3
=+
5.
xxx
35.549.225.3
=+
6.
13
250125
+
=+
xxx
7.
027.21812.48.3
=−−+
xxxx

8.
xxxx
)5,0.(241252.3)5,0.(88
331
−=++
++
9.
12122
222
10.50425
−−+−−
=+
xxxxxx
10.
022.92
2212
22
=+−
+++ xxxx
11.
xxx
6.52.93.4
=−
12.
4)32(32
=−+







+
x
x
13.
14487487
=






−+






+
xx
14.
221212
=







−+






+
xx
15.
2
25353
x
xx
=






−+







+
16.
( ) ( )
x
xx
2.853712537
=−++
Giải bất phương trình sau
1.
2
6
39
+
<
x
x
6.
xx
31
1
13
1
1
−
≥
−
+
2.
2
1

65
1
33
2
+
−+
>
x
xx
7.
2)
3
1
.(9)
3
1
(
2
12
>+
+
xx
3. 1 < 5
xx
−
2
< 25 8.
8log2)
16
1

()
4
1
(
4
1
>−
−
xx
4.
13
1
1
1
22
+
−
≥
x
x
9.
0
12
212
1
≤
−
−+
−
x

xx
5.
0
13
239
1
>
+
+−
+
x
xx
10. 25.
255102
>+−
xxx
11. 5.4
010.725.2
≤−+
xxx
12.
9339
2
−>−
+
xxx
13. (
3
1
1

3
)310()310
+
+
−
−
−<+
x
x
x
x
14. (
xxxxxx
+−++−+−
−<++
222
)15(32)15
1
Giải bpt
1.
( )
11
2
<+−
x
xx
2. (
1)3
72
2

>−
−
x
x
3.
( )
132
1
1
2
<++
+
−
x
x
xx
4.
( )
112
1
1
2
≤+−
+
−
x
x
xx
Giải bpt
1. 2log

2
(x-1)
≤
log
2
(5- x) + 1 2.
1)34(log
2
8
≤+−
xx
3.
0)4(log2)86(log
5
2
5
1
<−++−
xxx
4.
0)
64
(log
3
1
≥
+
x
x
5.

)1(log1)3(log
22
−+≥+
xx
6. 2
3
2
)3(log)2(log
8
18
>−+−
xx
7.
0))5((loglog
2
4
3
1
>−
x
8.
0)(loglog
2
13
≥
x
9.
0loglog
2
2

2
≤+
xx
10.
3log
2
5
log
3
1 x
x
≥+
11.
2
3
4loglog
4
≤−
x
x
12.
48loglog
22
≤+
x
x
13.
0)
2
1

(loglog
2
3
6
≥
+
−
+
x
x
x
14.
1)65(log
2
2
≥+−
xx
x
15.
1)93(loglog
9
<−
x
x
16.
2)
16
15
2(loglog
5,02

≤






−
x
17.
126
6
2
6
loglog
≤+
xx
x