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

  • Thread starter Brewer
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I have a question that asks me to write dv/dt as a function of x.

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
 

dextercioby

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Did you hear about the chain rule of differentiation...?

Daniel.
 
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dextercioby said:
Did you hear about the chain rule of differentiation...?

Daniel.
yeah that though occured to me whilst sitting in the car just.

but surely theres another term involved in it isn't there?
 

dextercioby

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No.

[tex] \frac{dv}{dt}=\frac{dv}{dx}\frac{dx}{dt} [/tex].

Daniel.
 
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dextercioby said:
No.

[tex] \frac{dv}{dt}=\frac{dv}{dx}\frac{dx}{dt} [/tex].

Daniel.
Of course!! What I had in mind was the product rule! Thank you for that - makes so much sense to me now!!!
 

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