# Logarithmic Action (3: V2)

- Author:
- Tim Brzezinski

- Topic:
- Logarithm, Logarithmic Functions

Interact with the applet below for a few minutes.

**At any time, you can move the LARGE BLACK POINT anywhere on the positive x-axis.**Can you write an identity that expresses the relationship visually shown here? How can we explain why this identity must be true?