Editing Logarithmic derivative (section)

==Examples==
* [[Exponential growth]] and [[exponential decay]] are processes with constant logarithmic derivative.{{Citation needed|date=August 2021}}
* In [[mathematical finance]], the [[The Greeks (finance)|Greek]]&nbsp;''λ'' is the logarithmic derivative of derivative price with respect to underlying price.{{Citation needed|date=August 2021}}
* In [[numerical analysis]], the [[condition number]] is the infinitesimal relative change in the output for a relative change in the input, and is thus a ratio of logarithmic derivatives.{{Citation needed|date=August 2021}}
* The [[digamma function]], and by extension the [[polygamma function]], is defined in terms of the logarithmic derivative of the [[gamma function]].