A little thing that may be stupid but I am confused about it. Say we take any equation like f=ma(adsbygoogle = window.adsbygoogle || []).push({});

If we take the derivative of both sides then we could either have

df=m da

or

df =a dm

Are both of these valid computations. If I am looking to change the integrating variable can I use this any way I want? And would this work with any equation relating 3 or more variables?

thanks in advanced

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# Simple differential questions

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