James Stewart-Calculus_ Early Transcendentals-Cengage Learning (2015)

A72 Appendix I Answers to Odd-Numbered Exercises
17. f s22d is undefined.
5.
y=5
y
7.
y
x=2
y
0
y= 1
x+2
x
0 x
y=_5
0
x
x=_2
19. lim
xl21
f sxd does not exist.
y
21. lim f sxd ± f s0d
x l 0
y
9.
y
0
y=3
x
y=x+3
_π
0 x 1
y=2®
x=4
-1
0 x
ms80098-1
6et 2.5.19
23. Define f s2d − 3. 25. s2`, `d 5.27.06
27. s2`, s 3 2 d ø ss 3 2 , `d 29. f21, 0g
31. s2`, 21g ø s0, `d
33. x − 0 3
11. 0 13. 2 5 15. 3 2
3cA020509
6.16.04
17. 0 19. 21 21. 4
23. 22 25. s3
4 27. 1 6 29. 1 2sa 2 bd 31. `
33. 2` 35. y2 37. 2 1 2 39. 0 41. `
43. (a) (i) 0 (ii) 2` (iii) ` (b) `
(c) y
x
y=
lnx
_4
35. 8 37. ln 2
41. 21, right 43. 0, right; 1, left
(_1, 1)
(_1, _1)
45. 2 3 47. 4
y
(1, 1)
0 x
_1
4
ca020429
7.4.00
y
(0, 2)
(0, 1)
0
(1, e)
(1, 1)
49. (a) tsxd − x 3 1 x 2 1 x 1 1 (b) tsxd − x 2 1 x
57. (b) s0.86, 0.87d 59. (b) 70.347 67. None
69. Yes
Exercises 2.6 • page 137
1. (a) As x becomes large, f sxd approaches 5.
(b) As x becomes large negative, f sxd approaches 3.
3. (a) 22 (b) 2 (c) ` (d) 2`
(e) x − 1, x − 3, y − 22, y − 2
x
0
x=1
45. (a), (b) 2 1 2 47. y − 4, x − 23
49. y − 2; x − 22, x − 1 51. x − 5 53. y − 3
55. (a) 0 (b) 6`
57. f sxd − 2 2 x 59. (a) 5
x 2 4
sx 2 3d
(b) 5
61. 2`, 2` 63. 2`, `
y
0 1
x
65. ms80107-1 (a) 0 (b) An infinite number of times
6et 2.6.49
5.28.06
1
ms80109-1
6et 2.6.50
5.28.06
67. 5
x
_0.5
y
3
0 1
-25 25
x
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