For a particular model of car, bought in 1987 for £4750, the second-hand value after t years is given fairly accurately by the formula price = £e®41-0.189t The running costs of the car increase as the car gets older, so after t years the annual running cost is £(917 + 163t). When should it be replaced?
For a particular model of car, bought in 1987 for £4750, the second-hand value after t years is given fairly accurately by the formula price = £e®41-0.189t The running costs of the car increase as the car gets older, so after t years the annual running cost is £(917 + 163t). When should it be replaced?
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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Transcribed Image Text:For a particular model of car, bought in 1987 for £4750, the second-hand value after
t years is given fairly accurately by the formula
price = £e8.41-0.189t
The running costs of the car increase as the car gets older, so after t years the annual
running cost is £(917 + 163t). When should it be replaced?
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