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Logarithmic, Exponential,
and Other Transcendental Functions
Section 5.1
The Natural Logarithmic Function: Differentiation . . . . 493
Section 5.2
The Natural Logarithmic Function: Integration . . . . . . 498
Section 5.3
Inverse Functions . . . . . . . . . . . . . . . . . . . . . . 503
Section 5.4
Exponential Functions: Differentiation and Integration . . 509Section 5.5
Bases Other than e and Applications . . . . . . . . . . . . 516
Section 5.6
Differential Equations: Growth and Decay . . . . . . . . . 522
Section 5.7
Differential Equations: Separation of Variables
Section 5.8
Inverse Trigonometric Functions: Differentiation . . . . . 535
Section 5.9
Inverse Trigonometric Functions: Integration
. . . . . . 527
. . . .. . . 539
Section 5.10 Hyperbolic Functions . . . . . . . . . . . . . . . . . . . . 543
Review Exercises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 548
Problem Solving
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 554
CHAPTER 5
Logarithmic, Exponential, and Other Transcendental Functions
Section 5.1
The Natural Logarithmic Function: DifferentiationSolutions to Even-Numbered Exercises
2. (a)
(b)
y
3
3
0.2
4
2
1
−4
x
1
2
3
4
The graphs are identical.
−1
4. (a) ln 8.3
8.3
(b)
1
2.1163
0.6
1
dt
t
8. f x
6. (a) ln 0.6
2.1163
(b)
1
ln x
10. f x
0.5108
1
dt
t
0.5108
ln
x
Reflection in the x-axis
Reflection in the y-axis and the x-axis
Matches(d)
Matches (c)
12. f x
14. f x
2 ln x
ln x
16. g x
Domain: x
Domain: x > 0
y
0
ln x
Domain: x > 0
y
y
3
2
2
3
2
1
1
2
x
1
2
3
−3
4
−2
x
−1
1
2
3
1
−1
−2
−2
x
−3
ln 1
4
ln 1
2 ln 2
3 ln 2
ln 3
(c) ln
3
(d) ln
1
72
1
3
12
2 ln 2
ln 1
ln 3
3 ln 222. ln xyz
ln x
ln y
26. ln 3e2
ln 3
2 ln e
1
2
ln a
3
20. ln 23
ln 23
2
ln 2
0.8283
2 ln 3
4.2765
24. ln a
ln z
2
1.3862
3
2
2
3.1779
18. (a) ln 0.25
(b) ln 24
1
ln 3
28. ln
1
e
1
ln a
ln 1
ln e
1
12
1
1
493
494
Chapter 5
30. 3 ln x
Logarithmic, Exponential, and OtherTranscendental Functions
2 ln y
ln x3
4 ln z
ln
32. 2 ln x
34.
ln x
3
ln x2
2
36.
1
1
ln x
ln x
ln z4
x 3y 2
z4
1
1
ln y 2
2 ln
ln x
1
x
1x
x
1
3
x2 1
ln
2
x 1x 1
38. lim ln 6
3
ln
x →6
x
2
x2
1
x2
x2
ln
1
1
3
x
40. lim ln
x
x →5
x
4
f=g
−1
5
−1
42. y
ln x33
ln x
2
2
3
2x
y
3
2.
y
dy
dx
2x2
4x
2x2 1
1
ln x2
2
4
1 2x
2 x2 4
ln t
t2
ln
3
x
x
1
1
3x 1
1
x
fx
y
dy
dx
ln t
ln x
1
2x
1
x
4
1
x
ln
56.
t1 t
1
2.
x ln x
52. f x
4
x
x2
y
dy
dx
ln t
t
ht
y
48.
4x
1
ln x2
54. h t
58. y
1
1
hx
1ln x
2
2
At 1, 0 , y
ln 2x2
46. h x
ln x1
1
2x
y
At 1, 0 , y
50.
44. y
x
ln x
ln 2x
3
1
x
ln x
3
3
3
xx
3
ln ln x
1x
ln x
1
x ln x
t2
1
ln x
3
1
1
1
x
1
1
ln x
12
3 x2 1
1
60. f x
fx
2
2
3x
1
ln x
1
4
x
1
4
x2
4
x2
x2
1
x
4
x2
ln 5
1.6094
Section5.1
x2
2x2
y
62.
4
2x2 x
dy
dx
x2
x
4
4x x2
4
1
2
ln
4
x2
4
4x 4
x2
2x2
1
42
The Natural Logarithmic Function: Differentiation
4
1
x2
1
ln 2
4
x2
x
x2
4
1
ln x
4
4
4
1
4x
x
x2
4
Note that:
1
x2
2
Hence,
4
1
x2
2
4
2
2x x
4
1
12 2
2x x2
x2
4x x
64. y...
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