During a flu epidemic, the total number of students on a state university campus who had contracted influenza by the xth day was given by N(x) = 5000/1 + 49e−x (x ≥ 0). (a) How many students had influenza initially? (b)Derive an expression for the rate at which the disease was being spread. N'(x) = Prove that the function N is increasing on the interval (0, ∞). Because N'(x) < > = 0 ?for all x in (0, ∞), we see that N is increasing on (0, ∞).
During a flu epidemic, the total number of students on a state university campus who had contracted influenza by the xth day was given by N(x) = 5000/1 + 49e−x (x ≥ 0). (a) How many students had influenza initially? (b)Derive an expression for the rate at which the disease was being spread. N'(x) = Prove that the function N is increasing on the interval (0, ∞). Because N'(x) < > = 0 ?for all x in (0, ∞), we see that N is increasing on (0, ∞).
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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Spread of an Epidemic
During a flu epidemic, the total number of students on a state university campus who had contracted influenza by the xth day was given byN(x) = 5000/1 + 49e−x (x ≥ 0).
(a)
How many students had influenza initially?
(b)Derive an expression for the rate at which the disease was being spread.
N'(x) =
Prove that the function N is increasing on the interval (0, ∞).
Because N'(x) < > = 0 ?for all x in (0, ∞), we see that N is increasing on
(0, ∞).
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