Just wondering how exactly this works... dy/dx . (partial derivative)df/dr = dy/dx . x/r I'm assuming I use the chain rule..? if so what substitution do i need to make..and how does this work..?
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Originally Posted by dankelly07 Just wondering how exactly this works... dy/dx . (partial derivative)df/dr = dy/dx . x/r I'm assuming I use the chain rule..? if so what substitution do i need to make..and how does this work..? Clearly there is important background information to this question that you haven't included ....
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