I have a question that asks me to write dv/dt as a function of x.(adsbygoogle = window.adsbygoogle || []).push({});

I know that dv/dt = vdv/dx

but I don't know why this is. Could anybody shed some light on this for me? Just so I understand why it is this!!!

Thanks in advance

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# I know the answer but I don't know why!

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