Modeling with Periodic Functions Answers
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21
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Which did you include in your response
A
A cosine function would be a simpler model for the situation.B
The minimum depth (low tide) occurs at t = 0. A reflection of the cosine curve also has a minimum at t = 0.C
A sine model would require a phase shift, while a cosine model does not.22
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b = pi/20pi/10pi/5
A
pi/20B
pi/10C
pi/523
This amplitude is [___] meters. a = [___]
Answer:
1.5; -1.5
24
At approximately what time on the next day does the depth first reach 4 meters?
A
3:00 amB
4:00 amC
5:00 pmD
10:00 am25
so a = .
Answer:
-30
27
The vertical shift, k, is the length of the bladeheight of the windmillnumber of rotations per minute.
A
length of the bladeB
height of the windmillC
number of rotations per minute28
a =
Answer:
15
29
The period is [___] hours. b = [___]
Answer:
12.5; 4pi/25
30
The period is ,
Answer:
12
31
The blade makes one revolution in 7.51522.530 seconds.
A
7.5B
15C
22.5D
3032
pi/6pi/12✔ 4pi/25
A
pi/6B
pi/12C
4pi/2533
so b = pi/12pi/6pi/3.
A
pi/12B
pi/6C
pi/335
The vertical shift is k = .
Answer:
50
36
The phase shift is h = -2-112
A
-2B
-1C
1D
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