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OpenStudy (anonymous):
Assume that x and y are both differentiable functions of t. Find dx/dt when x=7 and dy/dt=-5 for the equation xy=42
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OpenStudy (abdullah1995):
https://answers.yahoo.com/question/index?qid=20100223132453AAb8hWW let me know if that doesn't calrify things up
OpenStudy (anonymous):
Thanks for your help ;) do I solve for y first or take dy/dx of xy=42. The other bits make sense.
OpenStudy (anonymous):
I got it now! Thanks again.
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