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October 2, 2014

Homework Help: calculus

Posted by Anonymous on Monday, March 30, 2009 at 9:14am.

I need help with this problem. I think I figured out how to set it up but I keep getting stuck in the middle.

A boat is pulled into a dock by a rope attatched to the bow of the boat and passing through a pulley on the dock that is 1m higher than the bow of the boat. If the rope is pulled in at a rate of 1m/s, how fast is the boat approaching the dock when it is 8m from the dock?

You would set up a right triangle and use the pythagoreom therom to solve I think. I need to figure out dx/dt right? How would I do that?

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