# Logarithms: Change of Base

- Author:
- Sadie Nielsen

- Topic:
- Logarithm

This applet allows you to change the base of the logarithm function. Consider these questions while using the applet:
How does the graph change as the base changes?
At what base value does the natural logarithmic function appear?
At which base does the graph of the logarithm function change concavity (change which way the curve faces)? How would you explain this?