I need help defining a logarithm.(adsbygoogle = window.adsbygoogle || []).push({});

My book simply says: A logarithm is an exponent.

This stumped me because I can't see how that is. I don't know what question to ask, but I might not be apprehending the relationship between an expo. function and a log. function.

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

Dismiss Notice

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!

# Homework Help: Help Understanding What a Logarithm IS

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