(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

s=[itex]\sqrt{(3x^2)+(6y^2)}[/itex]

2. Relevant equations

None

3. The attempt at a solution

[itex]\stackrel{ds}{dt}[/itex]=[itex]\stackrel{d}{dt}[/itex][itex]\sqrt{(3x^2)+(6y^2)}[/itex]

[itex]\stackrel{3x}{\sqrt{(3x^2)+(6y^2)}}[/itex]

The problem with that is its only d/dx if y is a set number. I don't know how to differentiate the entire thing properly. I have been hacking at this for 8 hours. I feel like mental jello.

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# Need help with chain rule for relating ds/dt to dx/dt and dy/dt

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