1. 1
1. x x x x
f x 36 225 3 4 3 25 .
f 0 5 f 0 3 f 0 40 f 0 105
2log log log log 0
f 0 2 f 0 11 f 0 77 f 0 32
2. x x x x
3 4 2 5 4 3 5 2
x x
f x 3 4 2 5 x x
g x 4 3 5 2
f
3. f x log log x 1 .
f.
f
f x 7 f x 1 log2 .
3f 101 2f 1001 f 10001 log18
4. x
f x ln e 1
1 x
g x ln 2e 2 .
f,g.
f,g
f 2x g x 1 .
g 1 x f x ln2
5. 2
f x log x 1 log x 2x g x 1 log x 1 .
f,g.
i. f x 0 ii. g x 0 .
f 4 3g 1 4 log30.
6. 2
f x log 2x 4x 4 2logx .
f
2x 1 f 1 xf 1 f 1
10 5 10 10 f 2
f 1 logx
x 2
2f 1 logx
x 2 2
7.
x 1
f x ln x
1 x
f.
f
2. 2
1 1
f , f , f 0
2 2
.
f x f x 1 1 2x 0 .
8.
4 2
f x logx 8 logx log 100x ,x 0,
f
M 10,25 .
i. f
2
2
f x log x 4logx
ii. f x 0 .
9.
2x
x
e 1
f x ln
e 5
.
)
) f x 2ln2.
) f x 0 .
f xx
g x e 5 e .
i. g -1.
ii. g x x g x
10. 2x x
f x ln e 2e 3 x
g x ln3 ln e 1 .
) f g.
) f x g x
) f x 2g x .
g 1 1.
g x g 1 f 0
11.
2x x
1 1
f x 2 3 1
5 5
x
g x 5 .
50
125 5 1
g x g x 1 g x 2 ..... g x 49
4
12. 2x x
f x ln e 4e 3
x x .
.
3. 3
13. 2x x
x
f x x
f x x 2ln2
f -
2x 1 x
2x 1 e x e
14. 2x x
f x ln e 6e 8 .
.
f x ln3
f x x ln3
15.
x
3
f x 5 .
x 1 x 3 x 4 x 2
f 7 3 5 f 3 5 .
f
A 1,19 .
3 f x f x 2
16.
x x1
f x e e
2
x x1
g x e e
2
.
f g
2 2
f x g x 1 x .
g g f g f , , .
f x 2g x 1.
17. 2
f x logx .
f
g x f x 2
y 2log4 .
18. f x log x 4 3.
f
k k, 2 f.
x 3 x x x 3
f 3 2 f 23 3 2
4. 4
19.
log 3x 14
f x
log x 4
.
f y 2 .
f y 1.
20. f x ln x 2 .
f
f
) 2
ln x 2 f x 2 0 .
21. f x log log x 4 .
f
f x 0 .
22.
x
2
f x 4 4
f
1,9 .
2,3 2
f x f 5x 6 .
4 x x
2f x 3 9 5 6 0.
23.
lnx 1
f x
lnx 1
.
f
1
f x
1
f
x
1 1
x 0, ,e e,
e e
.
1
f x 1
1
f
x
24.
x
4
f x
2
6 7
f f
7 6
.
.
0.
i. f x 1 f x 2 f x 3 48
ii.
log2
2f logx log f x
iii. logx log2
2 x 16