The cost per hour for fuel to run a train is v^2/4 dollars,where v is the speed of train,in miles per hour.Other costs including labor are $300 per hour.How fast should the train travel on a 360 mile trip to minimise the total cost for the trip.
The cost per hour for fuel to run a train is v^2/4 dollars,where v is the speed of train,in miles per hour.Other costs including labor are $300 per hour.How fast should the train travel on a 360 mile trip to minimise the total cost for the trip.