Solving a Simple Rates Problem: dx/dt when x = 4

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SUMMARY

The discussion focuses on solving the rates problem involving implicit differentiation of the equation xy=4. The user seeks to find dx/dt when x=4 and dy/dt=3. The solution involves differentiating both sides of the equation with respect to time t, leading to the conclusion that dx/dt can be calculated using the derived relationship from the differentiation process.

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  • Basic knowledge of derivatives and their applications
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xy=4

dy/dt=3

find dx/dt when x = 4

I completely forgot how to solve something this simple.
 
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Use implicit differentiation. Differentiate both sides of x(t)*y(t)=4 with respect to t.
 

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