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

Appendix I Answers to Odd-Numbered Exercises A67
27. (a) A linear model is appropriate. See graph in part (b).
(b) y − 1116.64x 1 60,188.33
13. y
2
y=2cos 3x
Thousands of barrels per day
90,000
55,000
0
Years since 1985
(c) In thousands of barrels per day: 79,171 and 90,338
29. Four times as bright
31. (a) N − 3.1046A 0.308 (b) 18
25
Exercises 1.3 • Page 42
1. (a) y − f sxd 1 3 (b) y − f sxd 2 3 (c) y − f sx 2 3d
(d) y − f sx 1 3d (e) y − 2f sxd (f) y − f s2xd
(g) y − 3f sxd (h) y − 1 3 f sxd
3. (a) 3 (b) 1 (c) 4 (d) 5 (e) 2
5. (a) y
1
0 1 x
(b) y
1
0
2
x
15.
0 π x
y
5
1
y=(x-2)@+1
0 2
x
17. y
y=2-œ„x
2
19. y
y=sin(x/2)
0 4 x
1 2π
0
x
(c)
y
1
0 1 x
(d)
y
1
0 1 x
21.
y
2
y=|x -2|
7. y − 2s2x 2 2 5x 2 4 2 1
0 2
x
9. y
23.
y
y=_≈
1 y=|œ„x-1|
0 x
0 1
x
25. Lstd − 12 1 2 sinF 2
365 st 2 80d G
11.
1
y
1
0
y=˛+1
x
27. Vstd − 250 sinsty2d 1 2250
29. (a) The portion of the graph of y − f sxd to the right of the
y-axis is reflected about the y-axis.
(b)
(c)
y
y= sin |x|
y
y=œ„„ |x|
0
x
0
x
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