The average speed f(t) (measured in kph) of traffic in a certain municipality between 4 PM to 8 PM on a typical weekday is approximated by the function f(t)=201-40√r+50, where 05154 and 1 is in hours. Assuming that t=0 happens at 4 PM, determine the time at which the average speed of traffic flow is highest and lowest.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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The average speed f (t) (measured in kph) of traffic in a certain municipality between
4 PM to 8 PM on a typical weekday is approximated by the function
r1)= 201 – 40V1 + 50, where 0SIS4 and t is in hours. Assuming that t= 0 happens at
4 PM, determine the time at which the average speed of traffic flow is highest and
%3D
lowest.
Transcribed Image Text:The average speed f (t) (measured in kph) of traffic in a certain municipality between 4 PM to 8 PM on a typical weekday is approximated by the function r1)= 201 – 40V1 + 50, where 0SIS4 and t is in hours. Assuming that t= 0 happens at 4 PM, determine the time at which the average speed of traffic flow is highest and %3D lowest.
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