2A-2. Logarithmic Functions
Instructions:
- Use the input boxes and slider tools for and to set the parameters for the logarithmic function .
- Use the input box for to adjust the location of the point on the graph. Use the slider tool for to adjust the location of the point .
Logarithmic Functions
Logarithmic functions are inverses of exponential functions.
- Algebraically, this means that they "undo" the operation of an exponential function. This allows us to "cancel" and solve equations.
- Graphically, this means that the graph of a logarithm function is a reflection about the line y = x of the corresponding exponential function (because inverse functions swap inputs x and outputs y).