Health/Medicine. Graph the velocity function and estimate the intervals on which the velocity of air in the trachea is increasing and those on which it is decreasing.

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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71. Health/Medicine. Graph the velocity function and estimate
the intervals on which the velocity of air in the trachea is
increasing and those on which it is decreasing.
Transcribed Image Text:71. Health/Medicine. Graph the velocity function and estimate the intervals on which the velocity of air in the trachea is increasing and those on which it is decreasing.
For Exercises 71 and 72, refer to the following:
During a cough, the velocity v (in meters per second) of air in the
trachea may be modeled by the function
v(r) = – 120r³ + 80r?
where r is the radius of the trachea (in centimeters) during the cough.
Transcribed Image Text:For Exercises 71 and 72, refer to the following: During a cough, the velocity v (in meters per second) of air in the trachea may be modeled by the function v(r) = – 120r³ + 80r? where r is the radius of the trachea (in centimeters) during the cough.
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