Suppose we have a function [math] f(x) [/math] that is a product

[math] f=f_1 f_2 f_3 \dotsm f_N [/math]

This is OP, I think ive already figured it out.

[math] f'= \sum_{k}^{N} \left ( \frac{f_k'}{f_k} \prod_{i}^{N}f_i \right ) [/math]

>>8963789
You can derive that yourself with the product rule big boi

>>8963792
Yeah I think that's correct.

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>>8963795
>Derive

>>8964253
Not so smug brainlet. Deriving, as in "deriving an identity", not deriving as in """""""deriving a function"""""""".