Is the following relationship true?:(adsbygoogle = window.adsbygoogle || []).push({});

[itex]\frac{\partial (ln(k))}{\partial P}=\frac{1}{k}\frac{\partial k}{\partial P}[/itex]

I am getting both of these terms from a paper on mineral physics and they seem to use both terms interchangeably. If so, how are these related?

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Natural log in PDE

**Physics Forums | Science Articles, Homework Help, Discussion**