Erwin is at an outdoor market.
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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Question
Erwin is at an outdoor market. He walks in a straight line from a fruit stand at a point 65 feet due
West of a fountain to a florist at a point 420 feet due North of the fountain. He walks at a constant
speed of 5 feet per second.
(a) Draw a diagram showing the location of the fountain, the fruit stand, and the florist, and impose
coordinates on the diagram.
(b) Write an equation describing Erwin’s path through the market.
(c) Write parametric equations for Erwin’s position t seconds after he begins walking.
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