a.
Graph the model by using graphing utility.
a.

Answer to Problem 9PS
Explanation of Solution
Given information:
The pressure
Where
Use a graphing utility to graph the model.
Calculation:
Here, we will consider the following model:
Now, we will plot the above graph by using graphing utility:
Hence, the results are shown in the graph.
b.
Find the period of the model.
b.

Answer to Problem 9PS
Explanation of Solution
Given information:
The pressure
Where
What is the period of the model? What does it represent in the context of the problem?
Calculation:
Here, the period of the model is:
Hence, the above value tells us that the pressure against the wall completes its one cycle in
c.
Find the amplitude of the model.
c.

Answer to Problem 9PS
Explanation of Solution
Given information:
The pressure
Where
What is the amplitude of the model? What does it represent in the context of the problem?
Calculation:
Here, the amplitude of the model is:
Hence, from the above values we can observe that the strongest pulse is of
d.
Find the pulse of the patient.
d.

Answer to Problem 9PS
Explanation of Solution
Given information:
The pressure
Where
If one cycle of this model is equivalent to one heartbeat, what is the pulse of the patient?
Calculation:
Here, the pulse of the patient is:
Hence, the pulse of the patient is
e.
Find the period and the coefficient of
e.

Answer to Problem 9PS
Explanation of Solution
Given information:
The pressure
Where
A physician wants the patient’s pulse rate to be
Calculation:
Here, for the person to have a pulse rate of
Now, the coefficient of
Hence, the period and the coefficient of
Chapter 4 Solutions
EBK PRECALCULUS W/LIMITS
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