Hi,(adsbygoogle = window.adsbygoogle || []).push({});

We know that if x=2, and y=4 for example, i.e that x is directly proportional to y.

What i am wondering about is when to say that x is proportional to lny? As in the case of Entropy in Statistical Physics where S proportional to lnW?

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

Join Physics Forums Today!

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

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

# Proportionality and the ln function

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