row to reach the town in the shortest possible time, if you can row at 4 miles/hr and walk at 5 miloc/br3

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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c) You are standing on the bank of a river that is 1 mile wide and want to get to a town on the
opposite bank, 1 mile upstream. You plan to row on a straight line to some point R on the
opposite bank and then walk the remaining distance along the bank. To what point R should you
row to reach the town in the shortest possible time, if you can row at 4 miles/hr and walk at 5
miles/ hr?
Transcribed Image Text:c) You are standing on the bank of a river that is 1 mile wide and want to get to a town on the opposite bank, 1 mile upstream. You plan to row on a straight line to some point R on the opposite bank and then walk the remaining distance along the bank. To what point R should you row to reach the town in the shortest possible time, if you can row at 4 miles/hr and walk at 5 miles/ hr?
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