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August 22, 2014

August 22, 2014

Posted by **keneth** on Thursday, November 9, 2006 at 9:04am.

please help!!!

Differentiating implicitly with respect to t,

2 x dx/dt - 4 y dy/dt = 0

dy/dt = (1/2) (x/y) dx/dt

Plug in x=10, y=4 and dx/dt = 20 and crank out the answer.

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