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90 The cost per hour of running a freight train is given by C(v)= 10v + where v is the average speed of the train. a Find the cost of running the train for: i two hours at 15 kmph 6 Find the rate of change in the cost of running the train at speeds of: i 10 kmph c At what speed will the cost be a minimum? dollars ii 5 hours at 24 kmph. ii 6 kmph.

90 The cost per hour of running a freight train is given by C(v)= 10v + where v is the average speed of the train. a Find the cost of running the train for: i two hours at 15 kmph 6 Find the rate of change in the cost of running the train at speeds of: i 10 kmph c At what speed will the cost be a minimum? dollars ii 5 hours at 24 kmph. ii 6 kmph.

Calculus: Early Transcendentals
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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90 dollars The cost per hour of running a freight train is given by C(v) = 10v + where v is the average speed of the train. a Find the cost of running the train for: i two hours at 15 kmph b Find the rate of change in the cost of running the train at speeds of: i ii 5 hours at 24 kmph. 10 kmph c At what speed will the cost be a minimum? ii 6 kmph.
Transcribed Image Text:90 dollars The cost per hour of running a freight train is given by C(v) = 10v + where v is the average speed of the train. a Find the cost of running the train for: i two hours at 15 kmph b Find the rate of change in the cost of running the train at speeds of: i ii 5 hours at 24 kmph. 10 kmph c At what speed will the cost be a minimum? ii 6 kmph.
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