Hello Let's say you have the following formula: $f(x)=\frac{dy}{dx}x$ And earlier you made the following substitution: $x=2n$ If you plug this in $f(x)$, I think you would get the following: $f(2n)=\frac{1}{2}\frac{dy}{dn}2n$ My question is: Is this true?
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closed as off topic by Pietro Majer, darij grinberg, Felipe Voloch, Deane Yang, Chandan Singh Dalawat Jan 15 2012 at 13:53 |
