So it has been quite a few years since I learnt about implicit differentiation so the content is a bit rusty in my mind.(adsbygoogle = window.adsbygoogle || []).push({});

x=rcos(θ)

How do you find dx/dt?

I know the answer but I am trying to figure out why. I mean dx/dt can be written as (dx/dθ)*(dθ/dt) so why is the answer not just (-rsinθ)*(dθ/dt)?

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# Basic implicit differentiation question

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