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15.Given the function y = 4,870.6e^-0.0462x, what is the value of x when y = 68.7?

15.Given the function y = 4,870.6e^-0.0462x, what is the value of x when y = 68.7?

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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14.Suppose a virus enters a population, and the number of infected people increases with time according to the function: P = 1,273,624.2/1+116.15e^-0.8496t where P is the number of infected people and t is the time in days. When would the maximum increase in the number of people getting infected occur; after how many days would it occur? 15.Given the function y = 4,870.6e^-0.0462x, what is the value of x when y = 68.7? 16.Given the function y = 37.2e^0.0741x, what is the value of x when y' = 5,045.2?
Transcribed Image Text:14.Suppose a virus enters a population, and the number of infected people increases with time according to the function: P = 1,273,624.2/1+116.15e^-0.8496t where P is the number of infected people and t is the time in days. When would the maximum increase in the number of people getting infected occur; after how many days would it occur? 15.Given the function y = 4,870.6e^-0.0462x, what is the value of x when y = 68.7? 16.Given the function y = 37.2e^0.0741x, what is the value of x when y' = 5,045.2?
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