an offshore oil well is 2 kilometers off the coast. the refinery is 4 kilometers down the coast. laying pipe in ocean is twice as expensive as layiing it on land.
what path should the pipe folow for the minimum cost?
i got 6-√3 km from the refinery .. help me whether its right or nt please!
April 24th 2013, 09:36 AM
No, that's incorrect. Can you show us how you set the problem up?
April 24th 2013, 10:07 AM
oh, sorry.. i got 7.47..
c= land path + ocean path
when dc/dx=0 , x=-1
is it right?