GeoGebra - free dynamic mathematics software that joins geometry, algebra and calculus


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Problem setting: A man with a boat at point S at sea wants to get to point Q inland. Point S is distance d1 from the closest point P on the shore, point Q is distance d2 from the closest point T on the shore and point P and T are at a distance of d.


Question: If the man rows with a speed of v_r and walks with a speed of v_w at what point R should he beach the boat in order to get from point S to point Q in the least possible time?



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Page last modified on January 11, 2008, at 02:23 PM